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Khayat, Meiaad; Perais, Jennifer; Wright, David M.; Williams, Michael; Lois, Noemi
Investigative ophthalmology & visual science, 06/2021, Letnik: 62, Številka: 7Journal Article
PurposeTo evaluate anatomic-functional associations at sites of retinal lesions in retinal vein occlusion (RVO). MethodsThis pilot, prospective, observational study was conducted at the Northern Ireland Clinical Research Facility (NICRF) of Queen's University and the Belfast Health and Social Care Trust, Northern Ireland, between August 1, 2018, and September 30, 2019. The study included 10 treatment-naïve patients with RVO (10 RVO eyes and 10 fellow eyes). There were 81 points/sites assessed for each eye at baseline; six patients were re-assessed 6 months after anti-vascular endothelial growth factor therapy at the same locations. We investigated associations between retinal sensitivity and presence of structural RVO lesions, including retinal ischemia, hemorrhages, intraretinal fluid (IRF) and subretinal fluid outside the foveal/parafoveal regions. Comparisons were made between RVO eyes and fellow eyes at baseline, and between RVO eyes at baseline and at 6 months after treatment. Regression models were used to investigate anatomic-functional associations. ResultsAt baseline, strong associations were found between reduced retinal sensitivity and presence of ischemia (estimate = -2.08 dB; P < 0.001), intraretinal fluid (estimate = -7.82 dB; P < 0.001), and subretinal fluid (estimate = -8.66 dB; P < 0.001). Resolution of subretinal fluid but not intraretinal fluid was associated with improved function (estimate = 2.40 dB P = 0.022; estimate = 1.16 dB P = 0.228, respectively). However, reperfusion of ischemic retina, observed in 31 of 486 points (6%) 6 months after anti-vascular endothelial growth factor therapy, was associated with a further decrease in retinal sensitivity (estimate = -2.34 dB; P = 0.035). ConclusionsRetinal sensitivity was decreased at sites of RVO lesions. Decreased function at sites of retinal ischemia did not recover after treatment, even when reperfusion occurred.
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JCR | SNIP | JCR | SNIP | JCR | SNIP | JCR | SNIP |
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in: SICRIS
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