Observation On Change Of Visual Contrast Sensitivity In Patients With Early Phase Diabetic Retinopathy

ObjectiveObservation on visual contrast sensitivity differences between patients with early phase diabetic retinopathy (no retinopathy or only mild micro-aneurysms of the non-proliferation) and normal population under the same conditionsMethodOPTEC6500 visual function test systems were used to examine patients with early phase diabetic retinopathy (no retinopathy or only mild micro-aneurysms of the non-proliferation) and normal population under the same conditions the 40 eyes in 20 cases respectively in the spatial frequency for the 1.5c/d,3c/d,6c/d,12c/d,18 c/d, when the value of contrast sensitivity, Select 1.5 c/d and 3 c/d represent low spatial frequencies,6 c/d on behalf of the spatial frequency,12c/d and 18 c/d represent high spatial frequency, visual contrast sensitivity values to x±s that the use of statistical software SPSS11.0, using t test, taking p<0.05 as statistically significant difference in statistical analysis doneResultsContrast sensitivity in diabetic group compared with the control group in the frequency space 1.5 c/d and 3 c/d, the non-statistical significance (p> 0.05). In the middle 6 c/d and 12 c/d and 18 c/d high frequency area, diabetic patients and normal control group, contrast sensitivity, the difference was statistically significant (p<0.05).ConclusionsEarly phase diabetic retinopathy (no retinopathy or only mild micro-aneurysms of the non-proliferation) the value of contrast sensitivity in patients with the same conditions, the normal non-diabetic population lower than the value of visual contrast sensitivity, visual applications contrast sensitivity checks help to identify patients with early diabetic retinopathy decreased visual function is the evaluation of visual function is very sensitive indicators.