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Yiu, Glenn; Manjunath, Varsha; Chiu, Stephanie J; Farsiu, Sina; Mahmoud, Tamer H
American journal of ophthalmology, 10/2014, Letnik: 158, Številka: 4Journal Article
Purpose To determine the effect of anti–vascular endothelial growth factor (VEGF) therapy on choroidal thickness in eyes with diabetic macular edema (DME). Design A retrospective, cohort analysis of 59 eyes from 59 patients with DME without prior anti-VEGF therapy. Methods Choroidal thickness was measured using semiautomated segmentation of enhanced depth imaging optical coherence tomography images at 0.5-mm intervals from 2.5 mm nasal to 2.5 mm temporal to the fovea. Changes in choroidal thickness with and without anti-VEGF treatment over 6 months were compared. Best-corrected visual acuity and central foveal thickness were analyzed to evaluate the association of choroidal thickness with functional and anatomic outcomes. Results Of the 59 eyes with DME, 26 eyes were observed without treatment, whereas 33 underwent intravitreal anti-VEGF therapy (mean number of injections, 2.73) over 6 months. In untreated eyes, there was no significant change in best-corrected visual acuity ( P = .098), central foveal thickness ( P = .472), or choroidal thickness at all measurements along the macula ( P = .057 at the fovea). In eyes treated with anti-VEGF injections, choroidal thickness decreased significantly at the fovea (246.6 to 224.8 μm; P < .001) and at 0.5 mm nasal (240.9 to 221.9 μm; P = .002) and 0.5 mm temporal (249.3 to 224.8 μm; P = .011) to the fovea. The decrease in subfoveal choroidal thickness after anti-VEGF treatment was not associated with the cumulative number of anti-VEGF injections ( R2 = 0.031; P = .327) or to changes in best-corrected visual acuity ( R2 = 0.017; P = .470) or central foveal thickness ( R2 = 0.040; P = .263). Conclusions Central choroidal thickness decreases after anti-VEGF therapy for DME after 6 months, but may not be associated with functional or anatomic outcomes in eyes with DME.
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JCR | SNIP | JCR | SNIP | JCR | SNIP | JCR | SNIP |
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in: SICRIS
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