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CONTRAST SENSITIVITY IN DIABETICS WITH RETINOPATHY AND CATARACT
Author(s) -
HOWES SHARON C.,
CAELLI TERRY,
MITCHELL PAUL
Publication year - 1982
Publication title -
australian journal of opthalmology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.3
H-Index - 74
eISSN - 1442-9071
pISSN - 0310-1177
DOI - 10.1111/j.1442-9071.1982.tb00380.x
Subject(s) - medicine , ophthalmology , contrast (vision) , maculopathy , retinopathy , diabetic retinopathy , diabetes mellitus , optometry , optics , endocrinology , physics
Contrast sensitivity responses were determined in diabetic subjects with retinopathy, macular disease and cataract. The test proved reliable in discriminating between different degrees of cataract and between diabetics with no retinopathy, mild background retinopathy and early maculopathy. Background retinopathy was shown to produce a loss of contrast sensitivity particularly at the low and medium frequencies. These thresholds increased with macular involvement Mild cataract was correlated with loss at the low and medium spatial frequencies, whilst moderate cataract suppressed sensitivity to all frequencies. Results are compared to colour discrimination in each patient