Color Vision Defect Associated with Diabetic Retinopathy

ABSTRACT

From May to October 1987, 32 patients of diabetic retinopathy were studied with visual acuity, Farnsworth-Munsell 100-hue test, urine glucose test, standard fundus color photography, and fluorescein angiography to assess the type and extent of color vision defect associated with diabetic retinopathy, mainly nonproliferative, and the presence of macular edema. Nine patients showed significantly higher error scores in Farnsworth-Munsell 100-hue test than expected in non-diabetic individuals and tendency of a tritan axis. Eyes with macular edema showed higher Farnsworth-Munsell 100-hue scores than those without macular edema, but the differences were insignificant. Only one patient made an error in reading of urine glucose test by himself.