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Foveal Microvascular Structures in Eyes with Silicone Oil Tamponade for Rhegmatogenous Retinal Detachment: A Swept-source Optical Coherence Tomography Angiography Study
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Foveal Microvascular Structures in Eyes with Silicone Oil Tamponade for Rhegmatogenous Retinal Detachment: A Swept-source Optical Coherence Tomography Angiography Study
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Journal Article
Foveal Microvascular Structures in Eyes with Silicone Oil Tamponade for Rhegmatogenous Retinal Detachment: A Swept-source Optical Coherence Tomography Angiography Study
2020
Overview
Silicone oil (SO) is widely used as a long-term intravitreal tamponading agent for rhegmatogenous retinal detachment (RRD) repair. This study investigated the structural changes of the foveal microvasculature using optical coherence tomography angiography (OCTA) in patients with RRD treated with vitrectomy and SO tamponade. Thirty-eight patients with unilateral RRD who were treated with vitrectomy and SO tamponade and were followed up for ≥3 months after SO removal were included.
En face
OCTA images were obtained and foveal avascular zone (FAZ) area and vascular density (VD) were compared between study eyes and unaffected contralateral eyes. The FAZ area in deep capillary plexus (DCP) was larger (
P
< 0.001) and the VD in DCP was lower (
P
= 0.022) in the study eyes than in the fellow eyes. The duration of SO tamponade was significantly correlated with the enlargement of FAZ area (
P
= 0.034) and reduction of VD in DCP (
P
= 0.015). These changes could reflect vascular insufficiency in eyes with SO tamponade and may represent a potential explanation for the pathogenesis of retinal thinning and unexplained visual loss.
Publisher
Nature Publishing Group UK,Nature Publishing Group
Subject
/ 692/420
/ 692/699
/ Adult
/ Eye
/ Female
/ Fovea Centralis - drug effects
/ Fovea Centralis - ultrastructure
/ Humanities and Social Sciences
/ Humans
/ Male
/ Ophthalmologic Surgical Procedures - methods
/ Retina
/ Retinal Detachment - diagnostic imaging
/ Retinal Detachment - drug therapy
/ Retinal Detachment - physiopathology
/ Retinal Detachment - surgery
/ Retinal Vessels - drug effects
/ Science
/ Silicone Oils - administration & dosage
