Introduction: Coronary artery disease (CAD) and its complications are the most prevalent etiology of mortality all over the world and diabetes mellitus (DM) is one of its risk factors. In this study prevalence of MI and unstable angina have been compared with different kinds of retinopathy and their severity.
Materials and methods: This study is a descriptive, cross sectional one that performed on 100 patients admitted in Imam, Farabi and Amir Alam Hospitals.
Results: Most important findings are as below: 1) Non-proliferative diabetic retinopathy (NPDR) are more prevalent than proliferative diabetic retinopathy (PDR), 41 Vs 17 cases, and 24 person were normal in MI population. And 12 persons had NPDR and 2 PDR and 5 normal in unstable angina. 2) Different diabetic retinopathy lesion were: 23 Venous dilation, 22 aneurysme, 18 hemorrhagic, 11 neovascularization, 10 macula edema, 6 retroretinal detachment, 2 gliosis. 3) on the point of presence or absence of diabetic retinopathy (DR), 72 percent had some kind of DR and 28 percent had nothing. Finally, in MI population 58 patients (70 percent) had DR and 24 patients (30 percent) didn't have any. In unstable angina 14 patients (77 percent) had diabetic retinopathy and 4 didn't have (23 percent).
Conclusion: Regarding the lack of facilities and shortcoming of necessary data, it was not possible to conduct a prospective investigation in this item, so the design and implementation of a prospective study based on enough cases and controls is strongly recommended.
