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March 1937


Author Affiliations


Arch Ophthalmol. 1937;17(3):444-467. doi:10.1001/archopht.1937.00850030058004

Unusual conditions, strange anomalies and manifestations of obscure disease have always interested the student of medicine. Improved ways of registering physical signs, especially photographs, have been for many years gradually assuming an important rôle in the permanent record of changes in the human body.

The background of the eye is the stage on which many of the tragedies of life are revealed to those competent to recognize the innumerable differences in color, light, shadow and contour. When fundus photography was introduced clinical research was given an impetus which has been steadily gaining. Much has been written, many photographs have been published, innumerable deductions have been drawn and important contributions have been made in regard to the study of constitutional, focal and local diseases of the eye. Much remains to be discovered and analyzed.

The subject of this essay is a peculiar condition characterized by night blindness, sometimes evident