AI Summary & Key Takeaways
AI InsightHbA1c levels seem to be related to stage of retinopathy.
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Abstract
Introduction: To evaluate effect of diabetic retinopathy and panretinal photocoagulation on retrobulbar blood flow together with systemic factors. Methods: 62 Type 2 diabetic patients who either received or did net receive panretinal photocoagulation for variable stages of retinopathy and 15 control patients were enrolled in our study. BUN, creatinine and HbA1c levels for each subject have been determined. The ophthalmic artery and central retinal artery peak systolic velocity and end-diastolic velocity values were measured with color Doppler ultrasonography and resistivity indices were calculated. Results: In diabetic group, lower blood flow velocities and higher resistivity indices were found in ophthalmic artery. There were no significant differences between the laser photocoagulation group and the preproliferative-proliferative retinopathy group as regards to blood flow velocities. BUN and creatinine levels increased with the stage of retinopathy. HbA1c levels were especially low in no retinopathy group with respect to others but there was no direct relation with the blood flow velocities. Discussion and Conclusion: In diabetic patients retrobulbar blood flow velocities seems to decrease with the progression of retinopathy. Panretinal photocoagulation has no significant effect on these parameters. HbA1c levels seem to be related to stage of retinopathy.