Effect of Diabetic Retinopathy on Retinal Nerve Fiber Layer Thickness

Document Type : Original Article

Authors

Department of Ophthalmology, Faculty of Medicine Aswan University

Abstract

Background: Diabetic retinopathy is one of the most common causes of vision loss in developed countries. Objective: The objective of this study was to assess the effect of diabetic retinopathy (DR) on the retinal nerve fiber layer (RNFL) thickness. Patients and methods: This study was carried out on 55 eyes of 35 patients designed as a prospective, interventional case series at Sohag Hospital from January, 2016 to December, 2016. A complete ophthalmologic examination was performed including best-corrected visual acuity (BCVA) using the ETDRS charts, intraocular pressure (IOP) measurement, slit-lamp biomicroscopic examination, fundus examination and fluorescein angiography. Results: The RNFL (inferior and total) thickness at each follow-up was increased significantly from baseline to 1 month and 6 months post-PRP then decreased significantly from 1 month to 6 months follow up (p < 0.001). The superior RNFL was increased significantly from baseline to 1 month post-PRP and then decreased at 6 month follow up (p < 0.001). While no significant change from 1 month to 6 months follow up (p > 0.05). Conclusion: Increase in the macular Ganglion cell (GC) thickness and RNFL at 1 month of follow-up that may be related to laser induced intraretinal inflammation which triggers increased capillary permeability and ensuing axonal edema due to the cytokine release.

Keywords

The Egyptian Journal of Hospital Medicine
Volume 77, Issue 2
October 2019
Pages 5002-5007

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