Shell-shock; burial; blow on occiput: Blindness.
Case 269. (Greenlees, February, 1916.)
A man in the third Wiltshire regiment was buried in a shell explosion and struck by a large mass of earth on the back of the head. When dug out, he was found blind. It was thought at the time that the severe blow at the back of the head had “concussed” the occipital cells for sight.
Some months later the man was sent to Mr. Pearson’s home for blind soldiers in London; but two months later was returned to Weymouth, under Greenlees’ charge. He thought himself worse, since now he could not see light at all. He had trained himself to take care of himself and steered confidently aside from obstacles in walking about. He was able even to learn the various colors by the sense of touch, according to Greenlees; thus, blue was diagnosticated against red: according to the patient, a piece of colored card always had a rougher feel if it was blue than if it was red. In fact, his work consisted of making colored net bags.
As to the possible interpretation of such a case, see Case No. 433 (man who could see large letters sometimes).
Re blindness, H. Campbell states that the number of cases of hysterical blindness appears to be decreasing as the war continues. The blindness he finds to be rarely an absolute one. As a rule, the vision is merely blurred or there is a contraction of the visual fields. The condition is much less frequent than that of deafmutism.
Re hysterical blindness, Dieufaloy is cited by Crouzon as describing a triad of conditions characteristic of hysterical blindness, namely, (a) sudden onset, (b) preservation of pupillary reflexes, and (c) normal fundus.