Are Contrast Sensitivity Functions Impaired in Insulin Dependent Diabetics Without Diabetic Retinopathy?

Contrast Sensitivity in Diabetic Retinopathy

Contrast sensitivity in diabetic subjects with and without retinopathy.

SUMMARY The clinical usefulness of the Arden grating test in assessing early abnormalities in retinal function of diabetics has been explored. Although the test revealed significant differences in constrast sensitivities between diabetics and normal persons, the large variances in the test scores of diabetics limit its use as a clinical tool for the screening of diabetic patients. Diabetes is s...

Impaired contrast sensitivity in diabetic patients with and without retinopathy: a new technique for rapid assessment.

A simple technique is described for assessing the sensitivity of the human visual system to gratings at threshold contrast. The technique has advantages for clinical use in that it is (1) inexpensive, (2) quick to administer, (3) portable, and (4) relatively free from bias. Forty-two diabetic patients and 84 normal controls have been tested. Fifteen diabetic patients (6/20 with retinopathy and ...

Insulin Resistance and Diabetic Retinopathy in Type I1 Diabetics

A quantitative index of the sensitivity to Vibration over the feet was obtained with the biothesiometer. The deterioration in this index during the first year correlated with the postglucose growth hormone values at 1 year (r = 0.25, p < 0.005). This relationship persisted on multiple regression analysis (with allowance for the initial vibration sensitivity, body mass index, age, sex, glucose l...

Hyperoxia improves contrast sensitivity in early diabetic retinopathy.

AIM The cause of vascular and visual pathology in diabetic retinopathy remains unknown. If retinal hypoxia plays a role, then early in the course of diabetes 100% oxygen breathing should normalise both contrast sensitivity and retinal blood flow. METHODS This hypothesis was tested in 12 diabetic patients with minimal retinopathy who, none the less, exhibited reduced contrast sensitivity (p = ...