PAUL H. WOSIKA, M.D., M.S., PH.D.
Over 40 methods and apparatus have been described in the past 85 years, claiming to measure the time necessary for the eye to become accustomed to low illumination (scotopic vision). Delayed dark adaptation (dysaptation) has come to be considered minimal or subclinical night blindness (hemeralopia). Of academic interest at first, the changes in the manner of living and lighting in this century have produced new demands upon adaptation ability and new interest in this phenomenon. Then, too, new impetus for study appeared following the claims that lack of vitamin A was the specific deficiency of night blindness, xerosis and
WOSIKA PH. AN EVALUATION OF THE DARK TEST1. Ann Intern Med. ;21:101–118. doi: 10.7326/0003-4819-21-1-101
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Published: Ann Intern Med. 1944;21(1):101-118.
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