Indian Journal of Clinical and Experimental Ophthalmology
Official Publication of Innovative Education and Scientific Research Foundation
Official Publication of Innovative Education and Scientific Research Foundation
Print ISSN: 2395-1443
Online ISSN: 2395-1451
CODEN : IJCEKF
Indian Journal of Clinical and Experimental Ophthalmology (IJCEO) is open access, a peer-reviewed medical journal, published quarterly, online, and in print, by the Innovative Education and Scientific Research Foundation (IESRF) since 2015. To fulfil our aim of rapid dissemination of knowledge, we publish articles ‘Ahead of Print’ on acceptance. In addition, the journal allows free access (Open Access) to its content, which is likely to attract more readers and citations of articles published in IJCEO. Manuscripts must be prepared in more...Original Article
Author Details :
Volume : 10, Issue : 4, Year : 2024
Article Page : 655-659
https://doi.org/10.18231/j.ijceo.2024.115
Abstract
Purpose: To record the resistivity index (RI), peak systolic velocity (PSV) and end-diastolic velocity (EDV) in the retrobulbar circulation and predict the progression of diabetic retinopathy (DR).
Materials and Methods : Forty patients with type 2 diabetes (DM) and forty non-diabetics patients attending the outpatient clinic for an eye examination were enrolled after informed consent. All study participants underwent a comprehensive ophthalmic examination including dilated fundoscopy. The diabetic patients were assigned to groups based on ETDRS grading of diabetic retinopathy. Color Doppler of the eye was performed on all the enrolled individuals. The peak systolic velocity (PSV), end-diastolic velocity (EDV), and resistivity index readings were recorded from the ophthalmic artery(OA), central retinal artery (CRA), and the posterior ciliary artery (PCA).
Result: The values acquired from OA showed a significant increase in RI and a significant decrease in PSV and EDV with the advancement of DR. The parameters PSV and EDV recorded from CRA, as were also decreased DR progressed. This decrease was clinically significant RI index recorded from CRA first displayed a rise with the appearance of DR and a notable decline from severe NPDR to PDR. As DR progressed, PCA parameters revealed a decrease in PSV and EDV and RI.
Conclusion: Significant changes in the resistivity index and flow velocities were observed in the retrobulbar vessels of the two groups. In this study, the results of decreased flow velocity with the progression of diabetes support the rheological changes involved in the pathophysiology of diabetes. The resistance index shows an significant increase with the progression of DR. These could be useful to predict individuals at higher risk for developing severe DR or PDR.
Keywords: Diabetic retinopathy, Color doppler imaging, Retrobulbar circulation, Peak systolic velocity, Resistivity index, Ophthalmic artery (OA).
How to cite : Pradeep T G, Kotian R, Venkatesh R, Comparison of retrobulbar circulation in type 2 diabetics and non-diabetics using color Doppler imaging. Indian J Clin Exp Ophthalmol 2024;10(4):655-659
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