Quantitative subanalysis of optical coherence tomography after treatment with ranibizumab for neovascular age-related macular degeneration.

Investigative Ophthalmology & Visual Science
P A KeaneSriniVas R Sadda

Abstract

To investigate the effects of ranibizumab on retinal morphology in patients with neovascular age-related macular degeneration (AMD) using optical coherence tomography (OCT) quantitative subanalysis. Data from 95 patients receiving intravitreal ranibizumab for neovascular AMD were collected. StratusOCT images were analyzed using custom software that allows precise positioning of prespecified boundaries on every B-scan. Changes in thickness/volume of the retina, subretinal fluid (SRF), subretinal tissue (SRT), and pigment epithelial detachments (PEDs) at week 1 and at months 1, 3, 6, and 9 after treatment were calculated. Total retinal volume reached its nadir at month 1, with an average reduction of 0.43 mm(3) (P < 0.001). By month 9, this initial change had been reduced to a mean reduction of 0.32 mm(3) (P = 0.0011). Total SRF volume reached its lowest level by month 1, with an average reduction of 0.24 mm(3) (P < 0.001). This reduction lessened subsequently, to 0.18 mm(3), by month 9. There was an average 0.3-mm(3) decrease in total PED volume by month 1 (P < 0.001), and this later declined further, to 0.45 mm(3), by month 9 (P = 0.0014). Total SRT volume was reduced by an average of 0.07 mm(3) at month 1 (P = 0.0159) and subs...Continue Reading

Associated Clinical Trials

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Citations

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