In wounds, such as those above mentioned, it is of great importance to bring the raw edges into contact, and retain them so; and, in most cases, one or more points of interrupted suture are necessary. Adhesive plaster may be at the same time applied, but of itself is insufficient to effect permanent coaptation.
Wounds of the eyeball, however slight, require much attention, being inflicted on an important and highly sensible organ, and there being always a risk of destructive inflammatory action. If the breach of surface be clean, simple, and superficial, rest of the parts will in general be sufficient to effect a cure. Lacerated wounds, and such as penetrate into the interior of the eyeball, cannot be expected to heal without morbid action having been excited: inflammation must be anxiously looked for, and actively combated as soon as it appears. When a foreign body lodges in the wound, it must be early removed. But in certain cases it is imprudent to attempt extraction of foreign matter; as when a small shot, or other minute substance, has lodged in the interior of the eyeball. In such circumstances we can only adopt such measures as prevent and subdue morbid excitement. The organ may remain little disturbed for a short period, but violent inflammatory action soon occurs, and, though subdued for a time, again breaks forth, and, by its successive attacks, may ultimately destroy the eyeball. Frequently all endeavours to avert untoward results are unavailing, and the functions of the organ are more or less impaired—the cornea may become opaque, the iris may protrude, the pupil may become irregular, contracted, or obliterated—the crystalline lens may lose its transparency, amaurosis may occur from injury of the retina, the humours may be evacuated, and the eye sink in its socket. The entrance of a large foreign body into the orbit may displace the globe, and cause it to protrude between the eyelids: in such a case the body should be removed and the ball gently replaced; vision may be soon regained; but, if the protrusion has been such as to cause much stretching of the optic nerve, blindness more or less complete remains. Fatal effects may follow wound of the eye, on account of the foreign body, as a sharp-pointed instrument, penetrating the thin parietes of the orbit, splintering the bone, and injuring the brain.
Orbital Inflammation.—Inflammation seldom attacks the parts situated between the orbit and the eyeball; but, when it does, the affection is very serious. The action is very acute, and proceeds rapidly to suppuration. The pain is excruciating, extends to the whole head, accompanied with a sensation of extreme tension in the orbit, and is much increased by the slightest motion of the eye: and from the matter accumulating around the ball, and being confined to the unyielding orbit, by the dense fibrous expansion which extends from the margin of the orbit to the interior surface of the eyeball, the globe is pushed forwards, and distends the lids. The palpebræ become erysipelatous, and swollen by serous effusion. Violent inflammatory fever occurs; and, as the disease advances, all the symptoms are aggravated, and become almost intolerable. The globe is farther protruded, and the retina is insensible to light. At length the accumulated matter makes its way to the surface, and is discharged, giving great relief to the patient, and permitting the protruded globe to regain its situation. The inflammation seldom extends to the eyeball.
In the early stage of this affection, the most decidedly antiphlogistic measures are imperiously called for. When fluctuation can be felt, or when the symptoms indicate that suppuration has taken place, whether fluctuation is perceptible or not, an early opening into the affected part should be made through the dense orbital ligament. Thus a free exit is allowed for the matter, the patient is instantaneously relieved, and the extent of the local mischief is limited. It is unsafe to wait for the spontaneous evacuation of the matter: such a process is necessarily tedious, and, before it has been accomplished, the orbital bones may have become diseased; they may have given way at certain points, and the matter may have escaped within the cranium. The artificial opening should always be free, and deep if necessary.
Tumours in the Orbit.—Sarcomatous tumours occasionally form in the cellular tissue of the orbit. They occur at all periods of life, and may, by slow and gradual increase, cause the eyeball to protrude and disturb its functions; or their growth is rapid, and accompanied with great suffering. In some cases, the eye is made to protrude to a great degree, and by the extension of the optic nerve vision is impaired; in others, the patient is totally blind at the commencement of the disease. Yet the eye may be displaced to no small extent without amaurosis following. The optic nerve appears to bear a good deal of extension without disturbance of its functions. The majority of tumours in this situation are of rapid growth, their structure is soft and medullary, they sooner or later furnish a fungus, and, though removed at an early period, are generally reproduced. The exophthalmos is often the first indication of such a growth, and it is sometimes greater in the early part of the disease than afterwards, when the fascia passing down from the edge of the orbit has given way. The malignant tumours are most frequently met with in childhood, though morbid growths of a bad kind form in the eyeball at different periods of life. They often follow the infliction of a blow or wound. The patient’s sight speedily declines, without any known cause; there is pain in the forehead, temple, and eyeball; the ball protrudes, perhaps slightly, and at first is not otherwise changed; but on careful examination a dimness can be perceived deep in the eye. The opaque body approaches the pupil and fills it, and may in this state be mistaken for disease of the crystalline lens; but the tumour soon pushes forward the iris, and fills the anterior chamber. It has an irregular surface covered with flocculi. Blood-vessels are observed ramifying on it, and by this it is distinguished from cataract, should the accompanying symptoms not have previously convinced the surgeon of the nature of the disease. If not interfered with, the cornea ulcerates, a fungus appears, often grows with great rapidity, and may either furnish not a drop of blood, or bleed profusely. The eyelids are œdematous and permeated by large venous branches. Abscesses form around; the lymphatics of the neck are involved; and the patient succumbs. The original tumour may possess the usual structure of medullary sarcoma, may be of a melanotic nature, or may contain a mixture of both; or it is of harder consistence, containing cells filled with bloody, glairy, or other fluid. The whole coats of the eye are seldom involved: part remains sound, but compressed and disfigured by the morbid mass, and the humours are either absorbed or discharged.
Circumscribed tumours, exterior to the ball, and surrounded by a cellular cyst, may be removed by careful and cautious dissection, without injury to the important parts. A free incision is made along the edge of the orbit, in the course of the fibres of the sphincter oculi. The tumour is exposed, laid hold of with a hook or small vulsellum, and separated from its attachments by a knife, the edge of which is directed towards the new growth. A man, aged 26, had laboured under blindness with exophthalmos for eighteen months. A tumour could be felt above the eyeball, which I dissected out, along with the lachrymal gland, to which it adhered. It was of medullo-sarcomatous structure, and of the size of a plum: at one point it contained a mass of coagulated blood. After its removal, the eye resumed its place and functions. The patient remains well; but such favourable cases are rare.
If the affection be more extensive, it may be necessary to remove all the contents of the orbit: but, in disease involving the entire structures, there is little chance of the patient remaining free from it: it almost uniformly returns, as is also the case whenever the disease has commenced in parts of the eyeball. The optic nerve is often affected at an early period: its cut surface is unsound; and from this, again, springs a fungus which grows rapidly. But under many circumstances the surgeon is not only justified in removing the orbital contents, but called upon to do so. The operation, though cruel and painful, need not be tedious. The commissure of the eyelids is divided with the point of a bistoury, and the forepart of the ball laid hold of firmly and deeply with a vulsellum—that is, forceps provided with a double hook at each extremity of the blades. A straight bistoury is then entered at the margin of the orbit, pushed down to the base, as near as possible to the entrance of the optic nerve, and carried round the tumour rapidly, the blade towards the handle being made to move more quickly than the point. The nerve is cut across, and, after the removal of the morbid mass, the cavity is sponged out and examined. The lachrymal gland, and other soft parts, particularly if altered in texture, are raised with a hook, and removed by means of curved scissors. In young subjects, and in adults, when the disease is far advanced, the parietes of the orbit are thin, softened, and attenuated by pressure: the knife should therefore be used cautiously, and it is, perhaps, safer to finish excision with a narrow, curved, and probe-pointed bistoury, after having penetrated to the bottom of the orbit with a sharp-pointed knife: all other curious and crooked knives are useless. Bleeding is restrained by charpie, pressed firmly and quickly into the cavity, and supported by compresses and bandage; but, before introducing the dossils, all coagula and fluid blood should be carefully sponged out. Afterwards, excited vascular action, with pain in the head and wound, may in some subjects require abstraction of blood, the exhibition of purgatives and antimonials, and immediate removal of the dressings, followed by fomentation and poultice. When matters proceed favourably, the charpie is removed gradually as suppuration advances, and the granulations are supported with light dressing, either dry, or moistened with some slightly astringent lotion. The discharge will gradually cease, and the granulated surface cicatrise under the level of the eyelids. In such circumstances the deformity may be remedied, after the parts have become quiet, by the adaptation of an artificial eye of enamel, made so as to resemble exactly the other eye. It is worn without inconvenience, removed at night like artificial teeth or a wig, and cleaned and replaced in the morning. Such a substitute is also useful when the humours have been evacuated, or the organ destroyed, by injury or the effects of inflammation. Too frequently the morbid growth is reproduced, and that rapidly. It may be restrained by escharotics, the red oxide of mercury, potass, acetate of lead, acids, or the actual cautery; but the patient is thereby put to much pain without a chance of ultimate benefit.
It is too true, that the hopes of a cure, after the extirpation of the eyeball for malignant disease, are defeated by the prior existence of a similar affection within the cranium. In the majority of cases, death has occurred from tumours of greater or less extent, along the course of the optic nerve, or their tract: behind the commissure, and extending to the optic lobes and even cerebellum.
[STRABISMUS.
Strabismus, or squint, as it is vulgarly designated, may be defined to be an aberration from the natural direction of the optic axes, by which the consent between the eyes is destroyed, and vision more or less impaired. The resulting deformity varies in different cases, from the slightest possible cast to the most disagreeable obliquity. The affected organ may be turned inwards or outwards, upwards or downwards, according to the muscle upon the derangement of which the squint depends. When the eye is directed inwards, it constitutes what is called convergent strabismus; if, on the other hand, it inclines outwards it is said to be divergent. The upward and downward obliquities have not received any particular names. As might be supposed, these different forms of strabismus do not occur with equal frequency. On the contrary, two of them are so rare that I have not yet met with an instance, though I have examined the eyes of a very considerable number of persons labouring under this infirmity. These two forms are the upward and downward, both of which, but especially the latter, are so seldom witnessed that their occurrence may well be doubted, except as the result of external violence.
The most common variety of strabismus by far is the convergent, in which the eye is directed inwards, or inwards and upwards. Of 536 cases collected from various sources by a writer in the Philadelphia Medical Examiner, 506 were of this description, a proportion which fully accords with my own but more limited observation. The degree of obliquity may be very moderate, or so great that when the person looks directly forwards with the sound eye the cornea of the other shall be almost entirely concealed at the inner canthus. It is worthy of remark, that in this form of the lesion, at least so far as my own experience goes, the organ rarely, if ever, inclines downwards, but nearly constantly somewhat in the opposite direction.
Next in point of frequency is the divergent form, which, however, is comparatively rare. Of 866 cases reported in the work above alluded to, it was noticed only forty-four times; and thus far I have myself seen only three or four examples of it. The eye in this variety of strabismus is seldom drawn out very far, nor is it so apt to be attended with the same amount of upward obliquity as the convergent.
It seems to be the general sentiment of writers on strabismus, that, in the great majority of cases, only one organ is affected. Thus, in the article in the Philadelphia Examiner, before adverted to, it is stated that the distortion occurred 459 times in one eye, and only 47 times in both. Dr. Dix, of Boston, in a small treatise on strabismus, makes a similar remark. Of 50 cases which fell under his notice, the lesion is said to have been limited to one eye in 36. Now I am convinced from a good deal of experience that nothing can be more unfounded than this opinion, which is to be deprecated the more because it is calculated to lead to very serious errors in practice. I unhesitatingly assert, that in nearly all instances, at least of convergent squint, both organs are implicated, though not in an equal degree. Usually—perhaps always—one is more affected than the other, which the patient, therefore, regards as his good eye, as it is the one which he constantly employs in viewing objects. Nor is it surprising that this should be the case, when we recollect the remarkable sympathy existing between these structures, and the fact that when one eye is diseased the other is very liable to take on morbid action also. Amaurosis of one eye is very often followed by a similar malady of the other, and the same is true of cataract and some other affections. In the natural state there is a perfect agreement between the optic axes, produced by the harmonious action of the straight muscles, but when this consent is destroyed, as it is in strabismus, the eyes lose their parallelism, and the distortion in question is the consequence.
As was previously intimated, one eye is commonly more affected than the other, and this, if I mistake not, will be found to be the left, though it is impossible, in the existing state of the science, to indicate the proportion. Mr. Lucas thinks that the proportion in favour of the left eye is as three to two; Dr. Phillips of Liège, on the other hand, maintains that the right organ is more frequently involved than the other. It rarely happens that both eyes become deranged simultaneously; on the contrary, one generally squints first, and after a while the lesion begins in the other, the interval being probably very short.
Whether strabismus occurs with equal frequency in both sexes, is still an unsettled question. Of thirty-two cases on which I have operated, only five were females, whereas in the fifty cases published by Dr. Dix, of Boston, only nineteen were males, thus exhibiting a most remarkable disparity in reference to this point. The difference, if any, is perhaps not great either way, and, as it is of no practical importance, it need not be pursued any farther here.
The exciting causes of this affection are numerous and diversified. One of the most frequent is imitation. Nearly one-seventh of all the cases that occur are probably induced in this manner. Hence our schoolrooms may be regarded as a fruitful source of mischief, one cross-eyed child being often the cause of strabismus in many others, merely from that habit of imitation to which the young are so much addicted. Ophthalmia, by whatever cause induced, is another, and that a very common source of this distortion. I have seen repeated instances of this kind, and many others are mentioned by authors. Convulsions, eruptive diseases, such as measles and scarlet fever, hooping-cough, derangement of the digestive organs, injury on the eye, and difficult dentition, may all be enumerated as so many causes of the lesion in question. Frequently it arises without any assignable reason, and when the individual is in the most perfect health. Occasionally it is congenital, or, what is more probable, makes its appearance within a few days after birth.
It is supposed that strabismus is occasionally hereditary. This is doubtful; for if we sometimes meet with cross-eyed children whose parents, one or both, are similarly affected, it by no means proves that the distortion was transmitted to them in the manner of certain maladies. It only shows a coincidence, which may be explained, in most instances, on the assumption that the children have acquired the obliquity by imitation, or by some other cause, not that it was entailed upon them previously to birth. In the same manner we may satisfactorily account for the existence of strabismus in several members of the same family, of which a remarkable instance has recently come under my own observation. Of three brothers, one has three children affected with it, another two, and a third one. The parents have all sound eyes, and so have the uncles and aunts, except one, on whom I operated successfully several months ago. Last autumn I operated for cataract on three children belonging to a gentleman from Mississippi, who informed me he had six others at home, of whom three were affected with strabismus. Both parents, as well as their immediate relatives, are free from the affection.
Strabismus essentially consists in a contracted state of one or more of the muscles of the eye. This, as was before intimated, is commonly the internal rectus. The shortening, varying according to the extent of the squint, is always attended with a corresponding elongation of the opposite muscle, so that it gradually loses, either in whole or in part, its antagonising influence. How this affection is brought about, in the first instance, is still unknown, though it is probable that it depends upon some lesion of the nerves which supply the muscles of the eye, rather than upon any actual lesion of these fleshy bundles themselves. Be this as it may, when the resultant distortion is permanent, the affected muscle, from being constantly engaged in holding the eye in its unnatural position, acquires a corresponding degree of development, in accordance with a law of the animal economy that, in proportion as an organ is exercised, will be its size and strength. The more frequent occurrence of convergent strabismus is owing, doubtless, to the fact that the internal straight muscle is not only larger and stronger than the others, but that it is inserted much nearer the cornea, deriving thus two important mechanical advantages.
One of the most disagreeable effects of strabismus is the deformity to which it leads, rendering the individual an object of constant observation and ridicule. Were this confined to infancy and childhood, it would be of comparatively little consequence, but when we reflect that it continues through life, and that it is a source of incessant mortification, the influence which it exerts upon the temper and disposition of the sufferer must often be of the most unhappy kind. A still more serious effect, however, is the impairment of the vision of the affected eye, which, never entirely absent, sometimes amounts nearly to a total loss, from the insensibility of the retina, which is sometimes as complete as in confirmed amaurosis. In another series of cases the person is myopic, or sees objects only at a short distance. In some instances, again, there is double vision, or objects appear indistinct, and run as it were into each other, the image painted on the retina being confused and imperfect.
The distortion in question can be remedied only by a surgical operation, it having no tendency to a spontaneous cure. On the contrary, it generally manifests a disposition to increase, particularly in children of a nervous, excitable temperament. In fact, the very worst forms of squint I have ever witnessed were in persons of this description. The question then arises, at what age ought we to operate? My opinion decidedly is the sooner the better. Provided the child be in good health, and not under one year of age, I would not hesitate a moment to resort to the knife for its relief. And why should we? The operation itself is not particularly painful, and if it be done at an early period it will commonly be necessary to perform it only on one eye, whereas if it be postponed until the age of ten or twelve, as some have suggested, we shall not be able to effect a cure without dividing the corresponding muscle of the opposite side. Moreover, the sight in the meantime will become considerably impaired, the retina will lose its insensibility, and the individual be an object of ridicule and insult; all of which may thus be obviated. But it may be urged that a resort to the knife at this tender age will be both difficult and dangerous; difficult, because of the struggles of the little patient, and dangerous, because of the great susceptibility of the nervous system. In regard to the first of these points, it may be stated that the resistance, however great, may be easily enough surmounted by proper management; and, as it respects the latter, that it has been vastly overrated. Operations much more severe are frequently performed even at a much earlier period. I have seen the primitive carotid artery successfully tied in an infant of less than six months; and I have myself repeatedly operated, with similar results, for harelip, and that too in the very worst forms of that malformation. I do not, therefore, in these objections, see sufficient reason for deferring the division of the affected muscle.
The instruments which I employ for the operation, are two lid-holders, a double sharp-pointed hook for fixing the eye, a pair of dissecting forceps for pinching up the conjunctiva, and a scalpel or pair of scissors. The surgeon should also be provided with two or three small sponges and a basin of cold water.
The lid-holders (Fig. 1.) are each about six inches long, made of steel with an ivory handle, quite slender, and curved at the extremity, which is fashioned after the manner of a fenestrated speculum, and not more than a third of an inch in width. These instruments may be conveniently replaced by a common speculum and the fingers of an assistant: still, they are very useful, and I prefer them to any other contrivance. The hook for fixing the ball is double (Fig. 2.), resembling that contained in some of the older eye-cases. It ought not to exceed five inches in length, and should be provided with a movable slide, to allow of the proper separation of the branches, each of which, two lines in width, terminates in a short hook as delicate as the finest needle. The forceps need not be quite the ordinary size; and, as to the scissors, the common pocket-case pair will answer the purpose much better than a curved or more delicate instrument. The knife I rarely use. A curved director (Fig. 3.) is serviceable, as it enables the operator to judge of the extent of his incisions.
| Fig. 1. | Fig. 3. | Fig. 2. |
In performing the operation, the patient may be either in the semi-erect or reclining posture, with his head supported by an assistant, or properly elevated by pillows. I generally prefer the latter, as the eye is more manageable, and the patient less apt to faint than when sitting. The face should look towards the light, and the sound eye be covered with a bandage, to enable the patient the better to roll the other outwards. If the surgeon be ambidexter, it does not matter where he stands: but if he uses one hand more adroitly than the other, he should place himself on the right side when he wishes to operate on the left eye; and, conversely, on the left if he wants to operate on the right. Only two assistants are necessary; one of whom, standing at the head of the patient, elevates the upper lid, and fixes the eye by inserting the sharp hook into the sclerotic coat, about two lines behind the cornea: the branches of the instrument being separated one-fourth of an inch, and the interval between them accurately corresponding with the horizontal axis of the eye. This precaution is important, and should never be neglected, otherwise it will by no means be so easy to find the affected muscle. The points of the hook should be fairly implanted into the substance of the sclerotic tunic, but no more. If it be passed simply through the conjunctiva, it will be impossible to steady the eye, to say nothing of the danger of lacerating that membrane, and thus inflicting unnecessary pain upon the patient. On the other hand, if it be pushed through the fibrous coat, violent inflammation might be set up. The other assistant, placed on the side of the affected eye, depresses the lower lid, and hands the sponges to the operator. It is sometimes more convenient to let this assistant steady the eye.
Everything being thus arranged, the operator pinches up a small fold of the conjunctiva, just behind the hook, or, in other words, about three lines behind the cornea, and makes a vertical incision into it with the knife or scissors, as he may prefer. Relinquishing the forceps, the edges of the wound will at once retract, exposing thereby a surface from four to six lines in length by two or three in breadth. At this moment there is usually some degree of hemorrhage, amounting often to more than half a teaspoonful, especially if the incision has been made too far back near the semilunar valve, where the parts are always more vascular than further forward. To arrest this a small sponge, pressed out of cold water, should be repeatedly applied; or, if it prove troublesome, the operation may be suspended until it ceases. The ocular fascia33 is next divided, when the muscle, now fairly exposed, is to be cut across with the scissors, one of the blades of which is passed behind it. The moment this is accomplished, the eye, from the force exerted upon it by the hook, springs towards the opposite side, and the muscle retracts within its sheath, especially if it has been thoroughly liberated from its connexions with the surrounding parts. To effect this, which I regard as of paramount importance, the scissors should be carried for some distance around the ball, nearly as far, indeed, as the margins of the adjacent straight muscles.
As soon as the affected muscle is divided, the eye usually at once resumes its natural position in the orbit, moving, if the other be sound, in perfect harmony with it. Occasionally, however, it retains some degree of its original obliquity; in which case it becomes necessary to reapply the instruments, to ascertain the cause of it. This will generally be found to depend upon an imperfect division of the muscle, or of the surrounding cellular tissue, by which the muscle is prevented from retracting sufficiently within its sheath. In some instances it remains without any assignable cause, but rarely beyond a few minutes, or, at farthest, a few hours.
The operation being over, the eye is bathed in cold water, to rid it of any blood that may remain in the wound, and the patient is confined in a dark apartment. Low diet should be enjoined for a few days, and, if inflammation arise, recourse must be had to antiphlogistic measures. In no case have I yet been obliged to abstract blood; a dose of aperient medicine being all that was required. Locally cold or tepid water may be used, as may be most agreeable to the patient’s feelings. When there is a good deal of pain in the eye, with more or less constitutional disturbance, such as slight shivering, headache, and nausea, warm drinks and an opiate will be required. The ecchymosis which attends this operation, and which is sometimes considerable, demands no particular treatment: no inconvenience arises from it, and it commonly disappears in a few weeks. I have never known suppuration or abscess to follow the division of the muscles of the eye; such an occurrence implies unusual violence, and cannot be too much condemned. The same remark is applicable to the wounding of the sclerotic coat, and the escape of the humours of the organ; an accident which has happened several times in the hands of ignorant bunglers.
A few hours after the operation is completed, the margins of the incision become coated with coagulating lymph, which is sometimes effused in such quantities as to give rise to considerable pain, and a sensation like that produced by the presence of a foreign body. The vessels in the parts around are somewhat enlarged, there is more or less lachrymation, and the lids feel stiff and uncomfortable. The sclerotic coat at the bottom of the wound remains visible for five or six days, when it becomes covered with granulations, which, uniting with those at the sides, gradually fill up the gap; the whole process, from the commencement to the completion of the cicatrization, occupying from three to four weeks.
Now and then the process of cicatrization is retarded by the development of fungous granulations. When this is found to be the case, they should be snipped off with the scissors; a procedure decidedly preferable to the application of the nitrate of silver, which is not only painful but rarely effective.
It has been recommended by some surgeons that, as soon as the soreness occasioned by the operation has subsided, the patient should begin to turn his eye in a direction opposite to that in which it was held by the contracted muscle, and that these efforts should be continued daily until it regains its natural position in the orbit. In my early cases, before I had devoted much attention to the subject, I adopted and acted upon this suggestion, but the result in every instance disappointed me. Nor do I now perceive any good reason for following it, since it does not seem to me to be founded upon correct principles. Where the eye still retains some degree of obliquity after the operation, it may be positively assumed that the section of the affected muscle, or of the fasciæ by which it is invested, has been imperfect; and when this is the case it would be in vain to expect Complete success. Again, the eye operated on may be entirely straight, and yet not move in concert with the other. This I have witnessed repeatedly, and hence my invariable rule is to divide at once the corresponding muscle of the opposite side, for the reason already mentioned—that the distortion generally involves both organs.
The operation for strabismus is liable to occasional failure, the principal causes of which may be thus enumerated:—1. Imperfect section of the affected muscle, or of the ocular and submuscular fasciæ. To this subject I have already several times alluded, and it is not necessary, therefore, to offer any further remarks concerning it in this place, than to say that the operator should never neglect to divide these structures most thoroughly. In bad cases the scissors must be carried up and down as far as the contiguous straight muscles, so as to denude completely the sclerotic coat for more than one-third of its circumference. The fasciæ must be effectually raked up, otherwise it will be impossible for the muscle to retract fully within its sheath. 2. Excision of a portion of the conjunctiva, eventuating in contraction of this membrane during the process of cicatrization, may be stated as another cause of failure. As there can be no necessity for such a procedure, since it does in no wise facilitate the operation, I need hardly say that it should be studiously avoided. 3. Strabismus is sometimes complicated with other diseases, such as convulsions, epilepsy, hydrocephalus, and analogous lesions. When this is the case, the operation cannot be performed with any prospect of success, and had better be declined altogether. The existence of amaurosis does not necessarily lead to failure; if cataract be present, it should be broken or depressed either at the time of the operation or before. 4. But the most powerful cause of all, in my opinion, and one which has not been sufficiently insisted upon by writers, is the coexistence of strabismus in both eyes, and the fact that our operative procedures are usually limited to one of these organs; a circumstance at variance alike with good practice and common sense. In several instances in which only partial success attended my efforts, the whole difficulty was fairly ascribable to this cause; and so thoroughly am I persuaded of its importance, that I have laid it down as a rule never to operate on one eye only when it is certain both are affected. The only exception to this is where the patient is very young, when the section of a single muscle will sometimes, though even then not always, be sufficient. 5. A fifth cause of failure is the readherence of the posterior extremity of the muscle to an unfavourable point of the sclerotica, by which it is again enabled to exert an undue influence over the movements of the eye. The manner of obviating this occurrence has been already indicated.
The effect upon vision is at first rather disagreeable, at least in some instances. It is only by degrees that the affected organ recovers its functions, and in many cases a considerable period must necessarily elapse before this is brought about. Occasionally, in fact, the retina, from long disease or other causes, is so effectually paralysed that the sight is never restored, and it is in instances of this description that a slight return of the distortion may be looked for, however well the operation may have been executed. Another effect sometimes witnessed is double vision. This is obviously dependent upon a want of agreement between the optic axes, and rarely lasts more than a few days, unless the obliquity has been only partially remedied.
The only other effect which it is necessary to notice here, as attendant upon this operation, is a peculiar prominence of the eye. This is generally well-marked, though not equally so in all cases, and imparts to the organ a full, bold expression; it is accompanied with a considerable separation of the lids, and is caused by the liberation of the organ from its confined situation.
The preceding remarks have special reference to convergent strabismus; with slight modifications they are applicable to the other forms of the lesion. From the more exposed situation of the eye the outer straight muscle is much more easily approached and divided than the internal; as to the relative facility of operating on the upper and lower, I can say very little from personal experience, but should suppose the difference, if any, to be trifling. As to the oblique muscles, I have not had occasion to divide them in a single instance, nor should I, from the knowledge I have on the subject, deem such a step necessary, it being very doubtful whether they have any agency in the production of strabismus. In several instances in which these fasciculi were divided by Lucas, Calder, and others, no impression whatever was made upon the distortion, and nearly all surgeons agree in the opinion that they should not be interfered with.
Attempts have been recently made to disparage the operation for strabismus, on the ground of the alleged tendency of the eye to return to its original malposition, or the occurrence of a new deviation. No proof, however, of such a result, founded upon an adequate number of statistical facts, has been given to the profession. In my own cases, so far as my information extends, not a single relapse has taken place where the operation was performed on both eyes, although nearly a year has expired since some of them submitted to it. Confirmatory of this, it may be stated that Dr. F. B. Dixon34 of Norwich, England, has recently published a list of forty-one cases of convergent strabismus, in thirty-one of which, twelve months after the division of the internal rectus, both eyes were perfectly natural; in five, where one organ alone was operated on, there was slight obliquity of the other; in two, the squint was changed to a leer, and in three others, the eye returned to its former malposition. These results, which are in the highest degree gratifying, are sufficient to show that the operation in question, first performed by Professor Dieffenbach of Berlin, in October, 1839, deserves to be classed among the established resources of surgery, which rarely exhibits such an amount of successful terminations.]
Of Nasal Polypi.—These tumours vary in texture and disposition, as formerly stated: but the soft mucous or benign polypus is, fortunately, by much the most frequent. Generally a great many coexist in one or both nostrils, growing from different parts of the Schneiderian membrane. Sometimes there is but one tumour, of a large size; and in some cases a large cyst, containing colourless fluid, fills the nostril. When numerous, they are in different stages of growth, and generally adhere to the membrane by a narrow neck, though sometimes several are attached by the same pedicle. It is not uncommon to remove ten or twelve polypi, or even a greater number, before the nostril is cleared. The parietes of the narrow passage betwixt the anterior and posterior nares is their most common situation, though their bases may proceed from the cells of the superior spongy bone.
The membranous covering of the inferior spongy bone, or of the anterior cavity of the nostril, is often at the same time relaxed: indeed, this of itself causes slight obstruction to the passage of air, and may be mistaken for polypus by the patient and the unexperienced. Projection of the cartilaginous septum to one side, with thickening of its covering, may also give rise to the same mistake. This formation is not uncommon, indeed it is rather frequent; and the projection is generally to the left side, with corresponding depression of the right. The circumstance may perhaps be accounted for by the pressure of the thumb overbalancing that of the fingers in the habitual practice of clearing the emunctory.
In polypus, the passage of air is obstructed, the patient feels as if labouring under a common cold—his head is stuffed: in cold and dry weather air passes through the cavity, though with difficulty; in a damp day the obstruction is complete. The tumour evidently increases, comes lower down, and even projects upon the lip. There is watering of the eyes, the lachrymal secretions being prevented from flowing into the nostrils; and, in cases of old standing, the patient is deaf, from the pressure of the tumours on the extremities of the Eustachian tubes. This latter symptom is not constant, but depends on the position of the tumours. I recollect an old gentleman, an elder of the kirk, afflicted with nasal polypus, who for thirty years had not heard his clergyman, though for twenty of these years he had attended service regularly, and from a sense of duty. On removal of the tumours hearing was perfectly restored.
The nose changes its form, is expanded and flattened. If the disease is extensive, and particularly if the tumour is malignant, the bones are separated, the eyes are protruded, and pushed outwards; indeed, the face is so distorted as to have been compared to that of a frog. Even in the benign form, when of long duration, great deformity of the features is produced, and the patient rendered very uncomfortable. Besides the symptoms already detailed, he suffers from acute pain in the forehead—he breathes loudly and with difficulty, particularly when asleep—he has lost the sense of smell, and does not relish food or drink—and there is often profuse discharge of a dirty mucous fluid, both externally and into the pharynx.
Soft mucous polypus may exist for many years, without depressing the palate, or projecting into the fauces. The anterior nasal cavity is its most frequent seat, and it widens and fills up the fissure between the anterior and posterior cavities: frequently it projects backwards, but is not visible, though it may be felt with the finger behind the soft palate. Its growth is slow. It may become malignant, as well as other adventitious structures equally simple; but such an occurrence is extremely rare. It may exist for many years; and, when at length removed, will be found of simple structure; and, if the operation be well conducted, no reproduction will take place. The tumours are supposed to be easily regenerated; but the truth is, that they are seldom eradicated completely. In general some are left, and these, emerging from the narrow space or cells in which they were confined, soon become fully developed—they expand, and speedily take the place of those which were removed. They can never be got rid of at one sitting: the operation requires repetition once and again; and of this the patient should at the first be made aware.
Malignant Polypi are met with in different degrees of advancement. Many are firm and fibrous, with an irregular surface and wide attachment—do not grow with great rapidity—furnish a sanious and bloody discharge, and give rise to painful feelings. If interfered with, their increase is accelerated. If removed completely, reproduction may not take place.
Tumours with broad bases, and of soft medullary consistence, attended with extensive change in the structure of the membrane, and softening of the bones and cartilages, grow very rapidly, fill the cavities and expand them, giving rise to great deformity, as seen opposite. They show themselves on the face, through the nostrils—protrude through the floor of the orbit—get into the mouth behind the palate, through the tuberous processes of the superior maxillary bone—or project through the alveolar processes. The discharge from them is profuse and fetid, and in some cases blood flows in no small quantity. Such growths usually commence in one or other of the sinuses connected with the cavity of the nose—sometimes, though rarely, in the frontal sinus. When seated in the antrum maxillare, pain is experienced in the cheek for a short time before swelling occurs. Soon the part enlarges, its coverings are thickened, the bony cavity expands, and the patient’s sufferings are excruciating. The teeth loosen, and sanious matter is discharged from their roots. The tumour extends into the nostril, and soon runs the course already mentioned. Malignant disease sometimes, though rarely, commences in the anterior cavity of the nostril.
No satisfactory cause can be assigned for the appearance of either the benign or malignant form of polypus.
The nostrils can be readily cleared of benign polypi, but seldom completely, as already stated, by one operation: in several cases, wherein only one or two tumours obstructed the cavities, I have had no occasion to repeat my interference. If the attachments are broad and extensive, a small curved blunt-pointed bistoury, or probe-scissors, may be employed for their separation. Sometimes the tumours can be pushed off by the finger, or by a probe with a blunt and forked extremity: then they either are blown out by the patient, or fall into the posterior cavity, thence into the pharynx, and are coughed up or swallowed. In cases such as are usually met with, forceps and a small vulsellum are the best instruments. The forceps should be about half the size of those generally used or sold by cutlers as polypus forceps. The patient is seated facing a good light and the body of the prominent tumour is laid hold of by the vulsellum; the forceps are then introduced, with the blades expanded, and carried backwards so as to reach its neck, which is then to be firmly grasped by the instrument, and gently twisted, so as to separate its connexions with the membrane. No force, no jerking or pulling, is allowable. It may happen, even with the gentlest and most careful management, that a small fragment of bone comes away along with the tumour; but this generally can or should be avoided: the cure is not rendered more certain by such an occurrence, as has been supposed. One tumour being thus detached, the same process is repeated with the others, till the cavity is cleared so far as hemorrhage or the patient’s fortitude will admit. Both nostrils, if, as is usually the case, both are stuffed, may be emptied at the first sitting, so as to enable the patient to blow through them. When the tumours filling the passage to the throat have been removed, so as to allow the ready egress and ingress of air, and when the forceps can be passed along the floor of the cavity, and are expanded and shut without meeting any obstruction, examination is to be made with the finger. In those who have long laboured under the disease, the fissure between the cavities is so much expanded as to admit the little finger easily, and by it the situation of the remaining tumours is ascertained, and instruments guided to them.
After the operation the nostrils are stuffed gently with lint, to prevent the access of cold air; and, if the hemorrhage be profuse, long pieces of lint pushed well back will generally be sufficient to arrest it: if not, the posterior cavity must be plugged from behind. It is prudent to prepare for the stuffing posteriorly in bad cases in which violent hemorrhage may be expected. Instruments with springs, &c., have been contrived for the purpose, but are useless, and cannot always be had. A loop of thin flexible wire, or of thick catgut, is passed along the floor of the nostril, and on reaching the throat is caught by the finger, or by a hook or forceps, and brought into the mouth. A piece of strong thread is then attached to the wire or catgut, and the latter is withdrawn; one extremity of the thread hanging from the nostril, the other from the mouth. To the middle of the thread a piece of lint rolled up to the size of the point of the thumb is affixed, and this is pulled back into the mouth, and directed into the posterior nares with the fingers; by the pressure of these, and by pulling at the thread, the dossil is firmly wedged into the aperture. Lint is preferable to sponge, as being more easily removed; sponge swells, and is apt to produce inconvenience. The plug must be well proportioned to the opening: if too large, it cannot be lodged in its situation; if too small, it does not fill it, and may be pulled through altogether. It should be smaller, of course, for young subjects and females than in adult males. It may be necessary to close both nostrils in this manner, when both are bleeding profusely, or when they communicate through an aperture in the septum. The anterior cavity is then closed with lint, and the hemorrhage, however violent, is completely commanded. The posterior plug is removed on the second or third day by pulling the oral extremity of the thread, and, if need be, by pressing through the nostril with a strong probe. Plugging may be required in epistaxis from other causes, when other means, as cold applied to the surface of the body, and astringent injections to the part, have failed. The latter remedy is not much to be depended upon.
The operation for polypus may be repeated when the parts have recovered, and the pain and discharge ceased. Ere then the patient again finds himself unable to propel air easily through the nostril, and, on examination, greyish, shining tumours are again visible. The same process of extraction is repeated until all are eradicated. Escharotics may be then applied with some advantage, but must be used with caution, and not of too active a nature: nitrate of silver and the red oxide of mercury are those commonly employed. But it is questionable whether these applications have any effect in preventing the future growth of the tumours.
The malignant form of the disease, even in a very early stage, is unmanageable: the tumours, if removed, are speedily reproduced, and the fatal termination may be accelerated by the interference. I have removed tumours from the antrum maxillare, and from the frontal sinus; but the parts became soon occupied by morbid growths of a more formidable character than the preceding: the membrane and bone appear to assume a disposition to generate such, and the fungous protrusions cannot be kept down with escharotics, nor with the actual cautery: nor, after free removal with cutting instruments, have escharotics, however freely applied, any effect in counteracting the inherent disposition to the disease, and preventing its recurrence.
The antrum, when filled with such tumours, is easily laid open. The cheek is divided perpendicularly from over the inferior orbitary foramen to the mouth, and the soft parts are dissected from off the bone. The cavity may then be exposed by means of a small trephine: but this instrument is scarcely ever required, the parietes being so softened as to yield easily to the knife: pliers or cutting forceps may be useful in enlarging the cavity. By the guidance of the finger, the attachments of the morbid growth are separated with a blunt-pointed bistoury; and a scoop is used to turn out the diseased mass. The root of the tumour is then touched with a red-hot iron, and by this implement, or by dossils of lint, the hemorrhage is easily arrested. But such operations, considering the result of those which have been practised, are scarcely justifiable.
It has been proposed for this disease to remove the tumour, along with its investment—to separate and dissect out the superior maxillary bone. It is a very severe operation, and one which puts the patient’s life in imminent jeopardy, from profuse hemorrhage or constitutional disturbance. In one case, the surgeon began the operation after having tied the common carotid of the affected side; but, having made the incisions of the cheek and palate, was obliged to desist, on account of the violent bleeding: eight days after, the common trunk of the temporal and internal maxillary was tied on the opposite side, and the incisions repeated, but the result was the same; the growth increased, and the patient perished. The disease is very insidious in its progress, and has gained much ground before the patient becomes alarmed and applies for surgical aid. The parietes of the antrum are expanded and softened; the tumour has projected behind through the tuberous process, upwards through the plate of the orbit, or inwards to the nostril; and has contaminated by its presence and contact all the neighbouring parts. Then removal of the maxillary bone, or of all the bones in that side of the face, can be of no service. The disease is seldom if ever seen by the surgeon early enough to admit of any operation being practised with the least chance of ultimate success. At a sufficiently early period, the removal of the bone—of the parietes of the cavity containing, and from which the tumour has grown, must without doubt afford a better chance, and is, in every point of view, to be preferred to the old operation described above of what was called trephining the antrum. In one case of soft and brain-like tumour filling the antrum, and evidently commencing there, I succeeded in removing the entire disease. The patient remained sound. I have more than once seen the operation performed for this soft and malignant growth of only some months standing; portions of the bone and tumour crumbled under the fingers of the operator—the operation was harsh, painful, and appalling—the cases hopeless. Execution of the manual part is not attended with serious difficulty, and it can seldom be necessary to tie arteries previously. To expose the bone, the cheek is divided from the angle of the mouth, to the origin of the masseter, and a second incision made from the inner canthus to the edge of the upper lip near the mesial line, detaching the alæ of the nose from the maxillary bone.
The flap of the cheek thus formed is dissected up, and the nasal process of the maxillary bone and the body of the os malæ are divided with a saw, or with strong cutting pliers. An incision having been made through the covering of the hard palate, near the mesial line, a small convex-edged saw is applied to the bone; and the alveolar process is cut through by the pliers, after extraction of the middle and lateral incisors. The bone is then pulled downwards and forwards, and its remaining adhesions separated by means of the knife or pliers. This last part must be accomplished rapidly, so as to reach the vessels, and arrest the hemorrhage. During the progress of the operation, cut branches of the facial and temporal are commanded by ligature or pressure, and the violence of the hemorrhage is moderated by compression of the carotids. After removal of the bone, the deep vessels, branches of the internal maxillary, are secured either by ligature, or by firm pressure with charpie or dossils of lint. The facial flap is replaced, brought together over the charpie by which the cavity is filled, and united by interrupted or convoluted suture. Cures by such proceedings, in such cases, are reported; the patients do not always die immediately after the operation; but there is reason to complain of want of candour as regards the ultimate result.
The disease, it is said, has been arrested by ligature of the common carotid; the allegation is not borne out by facts, nor is it easy to discover on what principle the practice was adopted. Such a result is not to be expected à priori, nor to be believed without farther trial; and these trials are not likely to be made.
The superior maxilla is liable to become the seat of other tumours beside the preceding. It may be occupied by fibrous tumour, commencing in the bone, or in the alveoli. The tumour feels hard, and very often not encroaching upon the antrum, is evidently circumscribed, and presents a smooth and botryoidal surface. It has not that disposition to involve neighbouring parts, hard as well as soft, but may remain long without extending farther than the superior maxillary bone, and occupying only a part of it. In such a case, excision of the maxillary bone is warrantable, and ought certainly to be performed; for there is no risk of the parts being extensively contaminated. I met with one instance of it in the latter situation a good many years ago. The patient was a female, about twenty-five years of age. The tumour was of four years’ duration, and its origin was attributed to a severe bruise of the cheek upon the corner of a table. The teeth had loosened soon after the injury, and the disease commenced in the gums. When she applied, there was a hard prominent swelling in the forepart of the maxillary bone, and a firm tumour involved the gums on the same side, and a part of the hard palate: the disease had made much progress during the previous six months, but had evidently none of the malignancy of the soft tumours which originate in, or early involve, the cavity of the antrum: at first it had possibly been of the nature of epulis. I removed the bone in the same way as already described, and had the satisfaction to find the disease completely taken away. The hemorrhage was restrained by compression behind the angle of the jaw during the incisions, and not more than ℥iii. of blood were lost. The tumour, when cut into, presented a homogeneous and fibrous appearance; at one or two points, softening had begun, and a small quantity of pus had been deposited. The external wound healed by the first intention, and the internal cavity granulated kindly. The patient remains perfectly free of disease, and bears little mark of so serious a disease or of so severe an operation. Within the last four or five years I have repeated the operation for this disease very often, and with uniform success. The cases are recorded in the Medico-Chirurgical Transactions, vol. xx., in the Lancet, and Practical Surgery, to which the reader is referred for further information on the subject. One of the tumours had attained an enormous size, and weighed nearly four pounds.