Dr.Dhivya
Background:Vascular changes and subsequent ocular hemodynamic alterations are critical events in the pathogenesis of diabetic retinopathy.Objectives:To evaluate retrobulbar hemodynamics in patients with type 2 diabetes using Color Doppler Imaging (CDI) and compare the results with non-diabetic controls.Materials and methods:We recruited 25 patients with type 2 diabetes and 25 age matched controls.CDI was performed to measure the peak systolic velocity, end diastolic velocity, resistivity and pulsatile indices of Ophthalmic, central retinal and posterior ciliary arteries. Results:We noted significant differences in the blood flow velocities and resistive indices of ophthalmic and central retinal artery in patients with diabetes compared to controls (p<0.05).Conclusion:CDI can be a useful non invasive tool for evaluation of orbital hemodynamic alterations in diabetes and resistivity index of retrobulbar blood vessels can be a useful marker in follow up of patients with retinopathy.
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