Purpose: To compare chorioretinal atrophy (CRA) progression in myopic choroidal neovascularization (mCNV) between intravitreal injections of ranibizumab (IVR) and aflibercept (IVA) in the eyes with mCNV.
Methods: Thirty eyes (28 patients) with treatment-naïve mCNV were included in this study. IVR or IVA was administered for up to 1 year. The best-corrected visual acuity (BCVA) was measured, and fundus photographs and fundus autofluorescence were obtained before and 1, 3, 6, and 12 months after the initial treatment. The clinical characteristics including the macular choroidal thickness in various areas and CRA progression were compared between the drugs. The clinical characteristics and macular choroidal thicknesses were compared between eyes with and without CRA progression.
Results: The BCVA improved significantly (p < 0.05 for all comparisons) from 0.44 to 0.26, 0.19, 0.20, and 0.17 after 1, 3, 6, and 12 months, respectively. CRA progressed in 12 (40%) eyes over 1 year. The CRA progression did not differ significantly between aflibercept and ranibizumab. The foveal choroid was significantly (p = 0.0043) thinner in aflibercept-treated eyes compared with ranibizumab-treated eyes at 1 year. Subfoveal CNV tended to cause CRA progression more frequently at 1 year, although this did not reach significance.
Conclusions: IVA to treat mCNV caused more severe thinning of the foveal choroid than ranibizumab; however, no significant difference was seen in CRA progression between the drugs and the choroidal thickness should not be associated with CRA progression. The CNV location may predict CRA progression after anti-vascular endothelial growth factor therapy for mCNV.
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