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  • Title: [Changes in the colour vision and contrast sensitivity in diabetic patients without retinopathy].
    Author: Malukiewicz G, Lesiewska-Junk H, Kaźmierczak K.
    Journal: Klin Oczna; 2009; 111(7-9):221-3. PubMed ID: 19899578.
    Abstract:
    PURPOSE: The aim of the study was to examine the colour vision and contrast sensitivity of the patients with type II diabetes, without retinopathy. MATERIAL AND METHODS: The study included 25 patients with diabetes without retinopathy or any other ocular diseases (50 eyes were tested). The control group was represented by 15 healthy people. Both anomaloscopic test, Rayleigh (red-green axis) and Moreland (blue-yellow axis) were used to test colour vision. Contrast senstivity was measured in spatial frequency of 2, 4, 6, 12 and 18 cycles/degree by using Gratings Contrast Sensitivity Test. RESULTS: The contrast sensitivity was lower in the spatial frequency of 6, 12 and 18 cycles/degree. The colour vision changes were observed (especially in the blue-yellow axis) more often than in healthy people. CONCLUSIONS: The colour vision examination and contrast sensitivity measurement in patients with diabetes without retinopathy can detect visual function disturbances in the early, subclinical stage of the disease.
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