Longitudinal study of visual functions in young insulin dependent diabetics.
The aim of this study was to compare the visual functions of a group of young insulin dependent diabetes mellitus patients (IDDMs), (n = 42) with an age and sex matched control group (n = 24). Examinations were carried out every 3 months for 2 years. There were no significant differences in visual acuity between IDDMs and control subjects. The IDDMs made significantly more errors with the desaturated D15 compared with the control group (P < 0.05). The contrast sensitivity for the IDDMs was lower at each spatial frequency compared with the control group, being significantly different from 3 c/deg and above (P < 0.05). A negative correlation was found between HbA1 and contrast sensitivity at 6 and 12 c/deg; as the HbA1 increased the contrast sensitivity decreased (P < 0.05). As the blood glucose level decreased, the colour vision deteriorated (P < 0.05). There was no significant difference between the visual performance of those IDDMs with retinopathy (n = 5) compared to those without.
Department of Optometry and Vision Sciences, University of Wales College of Cardiff, UK.
D
D
Banford
R V
RV
North
J
J
Dolben
G
G
Butler
D R
DR
Owens
D000293:Adolescent; D001786:Blood Glucose / Q000378:metabolism; D002648:Child; D003118:Color Perception / Q000502:physiology; D015350:Contrast Sensitivity; D003922:Diabetes Mellitus, Type 1 / Q000097:blood / Q000503:physiopathology*; D003930:Diabetic Retinopathy / Q000175:diagnosis; D005260:Female; D006801:Humans; D008137:Longitudinal Studies; D008297:Male; D014785:Vision, Ocular / Q000502:physiology*; D014792:Visual Acuity
D001786:Blood Glucose