AN INSTRUMENT FOR QUALITATIVE STUDY OF DARK ADAPTATION

Autor: Jacob B. Feldman
Rok vydání: 1937
Předmět:
Zdroj: Archives of Ophthalmology. 18:821-826
ISSN: 0003-9950
DOI: 10.1001/archopht.1937.00850110137013
Popis: On several occasions I have presented data obtained by the examination of eyes for the study of dark adaptation.1 These tests were quantitative and required the instillation of a miotic which was occasionally objected to by the patient. Then, too, the procedure was a time-consuming one, since it took about one-half hour for the actual study to be made and a like amount of time for the plotting of a graph. In an extensive study of unselected cases one expects to find a large number of normal persons with normal dark adaptation. It was therefore felt that much time could be saved if a simpler device was used which would quickly eliminate this group of normal persons. With such a test only a single reading of the minimum light visible is taken, with the light as the constant and time as the variable. This is in
Databáze: OpenAIRE