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要約 目的:加齢黄斑変性(AMD)に対するラニビズマブ硝子体内注射(IVR)の導入期における反応不良例の検討。対象と方法:2010年10月~2012年3月の間にAMDに対してIVRを施行され,導入期治療終了時に視力が不変もしくは悪化した28例28眼。反応不良症例の病型,治療前の病変最大直径(GLD),IVR前の治療歴,発症から治療までの期間などについて検討した。結果:同時期にIVRを施行した反応良好例と比較して,病型としてはポリープ状脈絡膜血管症(PCV),網膜血管腫状増殖(RAP)が多かった。PDTなどの治療歴のある症例も多い傾向にあった。反応不良例ではGLDの直径が有意に大きく(p<0.01),発症からの期間も有意に長かった(p<0.01)。結論:IVRの反応不良例では,PCVやRAPの占める割合が多く,GLDの大きさや治療歴,発症からの期間も関係する可能性が示された。
Abstract. Purpose:To present a review of cases who showed poor response to intravitreal ranibizumab for age-related macular degeneration(AMD). Cases and Method:This retrospective study was made on 28 eyes of 28 cases that received intravitreal ranibizumab or AMD in the past 18 months. As inclusion criteria, all the cases showed no improvement in visual acuity after treatment. They were evaluated regarding the type of AMD, size of the lesion, past history of treatment, and duration from onset to start of treatment. Cases that improved after the same treatment served as control. Results:The present series included higher rates of polypoid choroidal vasculopathy(PCV)and of retinal angiomatous proliferation(RAP)than the control group. The present series showed significantly higher values for greatest linear dimension(p<0.01)and longer duration between onset to start of treatment(p<0.01). Conclusion:Cases of PCV and RAP tended to show poor response to intravitreal ranibizumab. Response to treatment was poor in eyes with larger lesion or in cases treated after long interval from onset.
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