PURPOSE: To evaluate the efficacy of bimonthly intravitreal injections of ranibizumab for age-related macular degeneration (AMD) and polypoidal choroidal vasculopathy (PCV) in a pilot study. METHODS: This study was a prospective, interventional case series. Thirty eyes of 30 patients received prospectively at least three bimonthly intravitreal injections of ranibizumab (0.5 mg/0.05 ml) without loading doses. The best-corrected visual acuity (BCVA) and the central retinal subfield thickness (CRST) were measured before and monthly after the injections. RESULTS: Twenty-eight patients received the three planned injections; one patient refused the third injection, one patient did not receive the third injection because blood pressure was raised, and one patient received a rescue injection at month 5 because of increased retinal thickness. The mean logarithm of the minimum angle of resolution (logMAR) BCVA was 0.44 ± 0.37 before treatment and significantly improved to 0.25 ± 0.34 at month 6 (p < 0.001). The mean CRST was 335 ± 85.9 μm before treatment and decreased significantly to 261 ± 78.1 μm at month 6 (p < 0.001). Nine of 30 patients received six planned injections for 12 months. The mean logMAR BCVA was 0.38 ± 0.39 before treatment and significantly improved to 0.18 ± 0.33 at month 12 (p = 0.005). The mean CRST was 360 ± 110.8 μm before treatment and decreased significantly to 249 ± 57.0 μm at month 12 (p = 0.025). CONCLUSIONS: Bimonthly injections of ranibizumab may be effective for treating AMD and PCV.
PURPOSE: To evaluate the efficacy of bimonthly intravitreal injections of ranibizumab for age-related macular degeneration (AMD) and polypoidal choroidal vasculopathy (PCV) in a pilot study. METHODS: This study was a prospective, interventional case series. Thirty eyes of 30 patients received prospectively at least three bimonthly intravitreal injections of ranibizumab (0.5 mg/0.05 ml) without loading doses. The best-corrected visual acuity (BCVA) and the central retinal subfield thickness (CRST) were measured before and monthly after the injections. RESULTS: Twenty-eight patients received the three planned injections; one patient refused the third injection, one patient did not receive the third injection because blood pressure was raised, and one patient received a rescue injection at month 5 because of increased retinal thickness. The mean logarithm of the minimum angle of resolution (logMAR) BCVA was 0.44 ± 0.37 before treatment and significantly improved to 0.25 ± 0.34 at month 6 (p < 0.001). The mean CRST was 335 ± 85.9 μm before treatment and decreased significantly to 261 ± 78.1 μm at month 6 (p < 0.001). Nine of 30 patients received six planned injections for 12 months. The mean logMAR BCVA was 0.38 ± 0.39 before treatment and significantly improved to 0.18 ± 0.33 at month 12 (p = 0.005). The mean CRST was 360 ± 110.8 μm before treatment and decreased significantly to 249 ± 57.0 μm at month 12 (p = 0.025). CONCLUSIONS: Bimonthly injections of ranibizumab may be effective for treating AMD and PCV.
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