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LOW‐LUMINANCE MYOPIA AS MEASURED WITH A LASER OPTOMETER
Author(s) -
EPSTEIN DANIEL,
INGELSTAM ERIK,
JANSSON KJELL,
TENGROTH BJÖRN
Publication year - 1981
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.1755-3768.1981.tb05770.x
Subject(s) - mesopic vision , scotopic vision , photopic vision , luminance , optics , twilight , laser , optometry , physics , medicine , retina , astronomy
Using a new version of the laser optometer, enabling testing at photopic, mesopic and scotopic luminance levels, studies were performed which confirmed earlier reports of large inter‐subject variability in the magnitude of twilight and night myopia. Indications that a sizeable section of the population manifests such low‐luminance myopia were also substantiated. Tests in a twilight model landscape showed no simple formula for calculating spectacle correction from laser optometer values. The optometer was able to filter out those not likely to need mesopic correction and to help select those who may need special optical correction at that luminance.