Diabetes is a major concern for causing complications and vascular problems, including retinopathy, nephropathy, neuropathy and cardiovascular problems as a global pathology., our goal was to determine the relationship between myopia and anterior- posterior eye length with the severity of diabetic retinopathy in patients referred to Ophthalmology clinic of Valiasr Hospital.

In this case-control study, 75 patients were randomly divided into three groups, diabetic without retinopathy, with proliferative and non-proliferative retinopathy. Inclusion criterion for entering the study, were a clinical diagnosis of type 2 diabetes and at least 10 years of history of diabetes. Exclusion criteria including patients with cataract, eye surgery, keratoconus , keratoglobulus, and dissatisfaction. In order to investigate the presence of retinopathy from indirect retinal examination and examination with 90-degree lens, to determine the type of retinopathy from OCT and Fundus graph and indirect fundoscopy, were used, and to examine the anterior posterior length of the A-scan Nidek and to determine the degree of myopia from the auto refractometer and retinoscopy were used. After completing the questionnaire, the data were entered into SPSS 21 software and analyzed by Chi-Square, at a significant level of α = 0.05.

The mean age of patients referring was 59.7 ± 8.22 years and the mean duration of diabetes was 13.6 ± 5.0 years. There was a higher incidence of diabetes in patients with non-proliferative retinopathy than in the other two groups (P <0.05). Also, the serum level of the last glucose and HbA1c in diabetic patients without retinopathy was lower than the other groups (P <0.05).

Although the anterior -posterior eye length in the left and right eye are significantly affected retinopathy. The greater the length of the anterior -posterior eye length, or the patient with more myopia, it seems that the incidence of retinopathy is less.