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ORIGINAL ARTICLE
Year : 2018  |  Volume : 19  |  Issue : 1  |  Page : 53-57

Comparison between choroidal thickness in patients with diabetic retinopathy and normal individuals using enhanced-depth imaging spectral-domain optical coherence tomography


Department of Ophthalmology, Faculty of Medicine, Minoufia University, Minoufia, Egypt

Correspondence Address:
Ibrahim M.I. Gohar
Gwad Hosny St, Damanhour 22516, Al-Behira
Egypt
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/DJO.DJO_6_17

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Purpose The objective of this study was to evaluate choroidal thickness (CT) in patients with diabetic retinopathy (DR) and normal individuals. Patients and methods Totally, 60 eyes of patients with diabetes and 25 eyes of normal individuals underwent computed tomography scanning using enhanced-depth imaging spectral-domain optical coherence tomography. Patients with diabetes were classified into four groups: mild, moderate, severe nonproliferative diabetic retinopathy, and proliferative diabetic retinopathy. Manual measurement of CT was carried out at the foveal center and at a distance of 500 µm and 1500 µm in both directions from the fovea. Measurement was taken from the outer limit of the retinal pigment epithelium line to the end of the choroidal image on the optical coherence tomography (choroid–sclera junction). Results The mean subfoveal CT decreased significantly with progression of diabetic retinopathy and diabetic macular edema. However, CT in the control group showed the highest measurements. There was no statistically significant difference in age between the two groups (P>0.05). It was noted that the mean CT was thinnest nasally, followed by thickening subfoveally and thinning again temporally in normal individuals and patients with diabetes. Conclusion CT is altered in diabetes and may be related to the severity of retinopathy. The presence of diabetic macular edema is associated with a significant decrease in CT.


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