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Intravitreal bevacizumab therapy on an as-per-needed basis in subfoveal choroidal neovascularization secondary to pathological myopia: 2-year outcomes of a prospective case series

Pierluigi Iacono, Maurizio Battaglia Parodi, Alessandro Papayannis, Stylianos Kontadakis, Saumil Sheth, Francesco Bandello
Retina 2011, 31 (9): 1841-7
21775926

PURPOSE: To evaluate the effects of intravitreal bevacizumab in the treatment of subfoveal choroidal neovascularization (CNV) related to pathological myopia.

METHODS: Thirty eyes with treatment-naive CNV were included. Best-corrected visual acuity on Early Treatment Diabetic Retinopathy Study chart, optical coherence tomography (OCT), and fluorescein angiography assessment was performed at baseline and thereafter monthly for more than 24 months. Intravitreal bevacizumab on an as-per-needed basis was administered if either persistent intraretinal/subretinal fluid was detected on OCT or the presence of leakage was noted on fluorescein angiography. Primary outcome measures included the change in mean best-corrected visual acuity and the proportion of eyes improving by three lines or greater. Secondary outcome measures included the change in mean central macular thickness on OCT. The proportion of eyes with resolution of intraretinal/subretinal fluid on OCT and leakage on fluorescein angiography over the follow-up was also noted.

RESULTS: Mean best-corrected visual acuity improved from 54.8 ± 14.8 (Early Treatment Diabetic Retinopathy Study letters ± SD) to 59.03 ± 17.0 at 3 months, subsequently stabilizing to 58.63 ± 18.52 at 12 months and 59.25 ± 20 at 24 months. A statistically significant difference was detected only at the 1-month examination. Best-corrected visual acuity at 24 months showed a 3-line improvement in 36.6% of cases and at least a 1-line increment in 43.3% of cases. Mean central macular thickness showed no significant reduction from baseline (216.8 ± 86 µm) up to the end of 24 months (205 ± 77.8 µm). At the last visit, a complete CNV closure was obtained in 93% of cases while intraretinal/subretinal fluid was detected on OCT in 13% of cases. The mean number of intravitreal bevacizumab injections was 4.73 (range, 1-10) at the end of 12 months and 5.9 (range, 1-13) at the end of the 24 months.

CONCLUSION: Intravitreal bevacizumab injection for myopic subfoveal CNV administered on an as-per-needed basis over 24 months of follow-up achieved stabilization of vision with >90% CNV closure rate.

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