Relationship Between Asymmetric Diabetic Retinopathy with Blood Flow Parameters in the Central Retinal and Internal Carotid Arteries

بيست و يكمين كنگره سراسري چشم پزشكي ايران

23 الي 26 آبان 1390، تهران - ايران

Presentation Type: Speech

Purpose: This study is designed to assess the correlation between the diabetic retinopathy with blood flow parameters in the central retinal arteries (CRA) and internal carotid arteries (ICA).
Methods: This case series study is consisted of 40 eyes of 20 patients with asymmetric diabetic retinopathy. Twelve patients had asymmetric diabetic macular edema and eight patients had proliferative diabetic retinopathy (PDR) in one eye and non-proliferative diabetic retinopathy (NPDR) in the fellow eye. The Color Doppler Imaging (CDI) of the CRAs and ICAs were performed. Resistive Index (RI) in both CRAs and Peak Systolic Velocities (PSV) in both ICAs were measured.
Results: In 91% of the eyes with more severe macular edema, RI in CRA of the ipsilateral eye was more than the fellow eye of the same patient (p<0.05). All of the eyes with PDR had lower PSV in the ipsilateral ICA in comparison to the contra -lateral eye with NPDR (p<0.05).
Conclusion: The Color Doppler Imaging and determination of the RI in CRA and, measurement of PSV in ICA may have predictive value in identifying the eyes which is at risk for developing macular edema and proliferative diabetic retinopathy in the diabetic patients.