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Effects of yellow, orange and red filter glasses on the thresholds of a dark‐adapted human eye
Author(s) -
Aarnisalo Eero,
Pehkonen Pasi
Publication year - 1990
Publication title -
acta ophthalmologica
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.534
H-Index - 87
eISSN - 1755-3768
pISSN - 1755-375X
DOI - 10.1111/j.1755-3768.1990.tb01899.x
Subject(s) - orange (colour) , human eye , mathematics , adaptation (eye) , optics , filter (signal processing) , ophthalmology , optometry , physics , medicine , computer science , computer vision
Effects of 13 different yellow, orange and red (Schott) longpass filter glasses on the extrafoveal thresholds obtained by 3 normal subjects after dark‐adaptation were measured using a Goldman‐Weekers adaptometer. When filters GG400, GG420, GG435, GG455, GG475, GG495, OG515 and OG530 (cutting off radiation up to 527 nm) were used there was no significant change in the threshold value. However, significantly higher threshold values were obtained with the use of the filters OG 550, OG 570, OG 590, RG 610 and RG 630.