Text book of veterinary medicine, Volume 3 (of 5)

Chapter 155: LAGOPHTHALMOS. INABILITY TO CLOSE EYELIDS.

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Comprehensive clinical manual detailing disorders of the nervous, genitourinary, ocular, and integumentary systems in domestic animals. It begins with principles of neural control and general symptomatology, classifying motor, sensory, and psychic disturbances and methods for localizing lesions. The text describes specific conditions such as seizures, paralysis, meningitis, intracranial hemorrhage, tumors, and toxicoses, and outlines diagnostic signs and pathological causes. Later sections address urine analysis and renal disease, urinary tract inflammation and calculi, and diseases of the eye, skin, and constitutional systems, combining pathological description with clinical signs, differential diagnosis, and practical guidance for examination and interpretation.

LAGOPHTHALMOS. INABILITY TO CLOSE EYELIDS.

This is called hare-eye (lagos, hare) from the fact that the hare habitually keeps the eyelids open. It is mostly due to spasm of the levatores palpebræ, or to undue size of the orbicular opening. It may, however, accompany ectropion, exophthalmos, and enlargement or swelling of the eyeball from any cause. Bayer has seen cases in diseases of the trifacial nerve, in neoplasms in the orbit and in buphthalmus.

Cases of the kind are especially liable to irritation, inflammation and ulceration due to foreign bodies falling on the exposed bulb.

The treatment is largely that of the attendant condition ectropion, tumor, etc., which may be consulted.