Pulsed Doppler Imaging of Ophthalmic and Central Retinal Arteries in Diabetics with and Without Retinopathy and Controls
Journal Title: Journal of Medical Science And clinical Research - Year 2018, Vol 6, Issue 5
Abstract
Aims and Objective: The aim of this study is to evaluate hemodynamic changes of ophthalmic artery and central retinal artery in diabetic patients with and without diabetic retinopathy by comparing it with normal individuals and to find the use of pulsed Doppler imaging in differentiating diabetic patients with retinopathy from those without retinopathy Materials and Methods: Sixty patients, divided into three groups twenty each as non-diabetic controls, diabetes without retinopathy and diabetics with retinopathy. All the patients underwent pulsed doppler imaging through ultrasound modality. We qualitatively analysed the values of velocities and RI in ocular vessels. Results: There was a statistically significant (p<0.001) decrease in both the peak systolic velocity (PSV 0.10 m/s) and end diastolic velocity (EDV 0.02 m/s) of the central retinal artery in the diabetic patients with retinopathy compared to the diabetic patients without retinopathy (PSV 0.12 m/s, EDV 0.03 m/s) and the control group (PSV 0.14 m/s, EDV 0.04 m/s). The peak systolic velocity and resistance index of the ophthalmic artery was significantly increased in both groups of diabetic patients with retinopathy (PSV0.35, RI-0.80) and without retinopathy (PSV-0.34, RI-0.77) compared to controls (PSV-0.31, RI-0.71) Conclusion: Pulsed Doppler imaging is a useful modality to assess the risk of developing proliferative diabetic retinopathy which can lead on to visual loss. There was significant decrease in blood flow velocity of CRA of diabetic patients and it was much more reduced on comparing it with diabetic patients with retinopathy. The RI values of ophthalmic artery were also found to be increased in diabetic patients. Although the assessment of orbital blood flow in retinopathy requires further investigations, based on the results of our study we suggest pulsed Doppler imaging for its ability to provide information about hemodynamic changes and for the diagnosis of diabetic retinopathy as a supportive modality
Authors and Affiliations
Siddarth Ragupathi
Keywords
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