EASDEC European Association for the Study of Diabetic Eye Complications
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EASDEC European Association for the Study of Diabetic Eye Complications |
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Abstracts: KesselLine Kessel, Anita Alsing, Michael Larsen Department of Ophthalmology Herlev Hospital, University of Copenhagen, Steno Diabetes Center, Copenhagen Color vision in diabetic and non-diabetic pseudophakesThe aim of the study was to investigate wether the color vision changes observed in diabetics previously are caused by changes in the retina or by changes in the lens. Subjects and methodsWe examined 21 diabetic subjects and 19 non-diabetic subjects all of whom had had the lens on one eye removed due to cataract. The two groups were of equal visual acuity (median 0,7, range 0,3-1 in both groups) and age (mean (range) 57(33-75) for the diabetic group and 55(25-71) for the non-diabetic group). Retinopathy ranged from no retinopathy to laser treated proliferative retinopathy. Color vision was measured with the Farnsworth-Munsell 100 hue test. ResultsThe diabetic group scored significantly higher on the Farnsworth-Munsell 100 hue test than the non-diabetic group, mean error score (sd) 146 (94) versus 84 (79). Both scores were within normal range though. Error score could not be correlated to either degree of retinopathy, duration of diabetes, visual acuity, age or metabolic control, measured as the latest HbA1c. DiscussionIt is well-known that color vision deteriorates with age and that lens changes in cataract impair color vision. Lens aging is accelerated in diabetes. Thus the impaired color vision seen in diabetics can be caused by lens changes rather than by retinal changes as stated by others. This study confirms this hypothesis as the diabtics have color vision within normal age-related range. |
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