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Erschienen in: Graefe's Archive for Clinical and Experimental Ophthalmology 7/2019

17.04.2019 | Retinal Disorders

Correlation of retinal vascular perfusion density with dark adaptation in diabetic retinopathy

verfasst von: Chia-Chieh Hsiao, Hsueh-Min Hsu, Chung-May Yang, Chang-Hao Yang

Erschienen in: Graefe's Archive for Clinical and Experimental Ophthalmology | Ausgabe 7/2019

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Abstract

Purpose

To evaluate the anatomic versus functional changes in diabetic retinopathy (DR) by studying the correlation of retinal vascular perfusion density and dark adaptation (DA).

Methods

Optical coherence tomography angiography (OCTA) and DA tests were performed in diabetic patients and nondiabetic controls. DA was measured using AdaptDx dark adaptometer and the rod intercept was recorded. Macular OCTA images were acquired using the RTVue XR Avanti with AngioVue.

Results

Eighty-six eyes from 57 patients with diabetes (19 with no DR, 19 with non-proliferative DR [NPDR], and 19 with proliferative DR [PDR] who had undergone photocoagulation) and 10 eyes from 10 patients without diabetes were recruited. A significant decrease in vascular density and a prolonged rod intercept were found as DR progressed (P < .01). A negative trend was found between vascular density and the rod intercept. The negative trend in the deep layer (R2 = 0.28) was more substantial than that in the superficial layer (R2 = 0.14). A prolonged rod intercept was associated with elevated HbA1c (R2 = 0.08).

Conclusions

The vascular density of the macula could be assessed by OCTA and the functional change in the outer retina could be measured non-invasively by DA. The severity of decreasing vascular density and prolongation of DA are proportional to progression of DR. Decreased deep retinal vascular perfusion density and impaired DA response are correlated and show a negative trend according to the severity of DR.
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Metadaten
Titel
Correlation of retinal vascular perfusion density with dark adaptation in diabetic retinopathy
verfasst von
Chia-Chieh Hsiao
Hsueh-Min Hsu
Chung-May Yang
Chang-Hao Yang
Publikationsdatum
17.04.2019
Verlag
Springer Berlin Heidelberg
Erschienen in
Graefe's Archive for Clinical and Experimental Ophthalmology / Ausgabe 7/2019
Print ISSN: 0721-832X
Elektronische ISSN: 1435-702X
DOI
https://doi.org/10.1007/s00417-019-04321-2

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