PROGRESSIVE scleroperikeratitis is a rare disease. In Anglo-American literature the last cases were described in 1913 by Verhoeff1 and in 1916 by Derby and Verhoeff.2 One seems justified, therefore, in drawing the attention again to this peculiar, ill-defined disease, which gives rise to many different clinical pictures and which is mentioned in the literature under various names. The opportunity to study anatomically a tumor in the orbit which appeared to be an eye undergoing progressive scleroperikeratitis was the immediate motive prompting this publication.
REPORT OF A CASE
The clinical history of the case has already been given by Flieringa,3 in a lecture entitled "Tumors in the Orbit." At that time anatomical examination had not yet been made.A woman, aged 64, had been under treatment of many ophthalmologists during the past 30 years. The left eye possessed only some light perception. The right eye presented an unusual