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要約 目的:アフリベルセプト硝子体内注射(IVA)後に再発性の眼内炎を生じた網膜中心静脈閉塞症(CRVO)の1例を経験したので報告する。
症例:83歳,女性。既往歴に罹病歴30年の糖尿病と,リウマチ性多発筋痛症(プレドニゾロン内服)がある。左眼のCRVOに伴う黄斑浮腫(ME)に対し,前医でトリアムシノロンアセトニドのテノン囊下注射を2回,IVAを3回施行されていた。MEの再発が繰り返されるため,大阪公立大学医学部附属病院眼科(当科)を紹介され受診した。
所見と経過:初診時の左矯正視力は0.2,漿液性網膜剝離を伴うMEおよび網膜出血を認め,MEに対してIVAの継続投与を計画した。当科で10回目のIVA当日より視力低下を自覚し,注射5日後の再診時には左矯正視力は0.02と低下し,微塵様角膜後面沈着物,硝子体混濁,網膜白濁を認めた。感染性眼内炎を疑い同日硝子体手術を施行し,抗菌薬の点眼および静脈内投与を行い,術後炎症は速やかに消退した。硝子体培養結果は陰性であった。3か月後にMEの再発がみられたためIVAを再度施行したところ,2日後に同様の炎症所見を呈したため,硝子体手術と抗菌薬の点眼と静脈内投与を行い,術後炎症は速やかに消失した。硝子体培養結果は陰性で,3か月後の左矯正視力は0.1であった。
結論:硝子体注射後の再発性眼内炎の1例を経験した。いずれも硝子体培養は陰性でIVA後に再発を繰り返したことからアフリベルセプトに対する自己免疫的機序が関係していると思われた。
Abstract Purpose:To report a case of central retinal vein occlusion(CRVO)with recurrent intraocular inflammation after intravitreal aflibercept injection(IVA).
Case:An 83-year-old woman was referred to our hospital due to a recurrence of macular edema secondary to CRVO. Her medical history included diabetes mellitus for 30 years and polymyalgia rheumatica(on prednisolone). She had received a sub-Tenon triamcinolone acetonide injection twice and IVA three times in her left eye at a previous clinic. The best corrected visual acuity(BCVA)was 0.2 in the left eye, and macular edema with serous retinal detachment and retinal hemorrhage was observed. IVA was adminstered in our hospital, and 5 days after the 10th IVA, the BCVA was 0.02, and fine keratic precipitate, vitreous opacity, and vitreal opacity were observed in the left eye. Suspecting infectious endophthalmitis, a vitrectomy was performed on the same day, and antibiotic eye drops and intravenous administration of the antibiotics were initiated. Vitreous culture examination was negative for infection. Three months later, the macular edema recurred and another IVA was performed. Two days later, the same inflammatory findings were observed. Hence, the same treatment was performed as before. Thereafter, the intraocular inflammation quickly disappeared. The BCVA improved to 0.1 after three months the vitrectomy.
Conclusion:We report a case of recurrent endophthalmitis after IVA. Since vitreous culture examination was negative for infection at both times, it was assumed that some autoimmune mechanism related to aflibercept was involved in the etiology.
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