망막정맥폐쇄 환자에서 유리체내 베바시주맙 주입술의 2년 임상 결과
Two-Year Results of Intravitreal Bevacizumab Injection in Retinal Vein Occlusion
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목적: 망막정맥폐쇄에서 유리체내 베바시주맙 주입술 2년 임상결과에 대해 알아보고자 하였다. 대상과 방법: 망막정맥폐쇄 환자 중 6주 간격으로 연속 3회 유리체내 베바시주맙 주입술(1.25 mg/0.05 ml)을 시행 받고 2년 이상 경과관찰이 가능했던 32명 32안(BRVO 22안, CRVO 10안)을 후향적으로 분석하였다. 시술 전과 3회 시술 후 6, 12, 24개월의 최대교정시력과빛간섭단층촬영(OCT)을 측정하였다. 결과: 시술 후 2년 경과 관찰 동안 시력의 유의한 호전이 유지되었으며(p=0.000) 32안의 망막정맥폐쇄중 16안(BRVO 8안, CRVO 8안)에서 황반부종의 재발로 인하여 재주사가 필요하였다. CRVO에서 술 전 OCT상 장액망막박리를 보인 경우 낭포황반부종을 보인 경우에 비해 재주사의 빈도가 유의하게 높았으며(p=0.049), BRVO에서도 장액망막박리에서 재주사율이 높았으나 통계적 유의성은 없었다(p=0.375). 결론: 망막정맥폐쇄에서 유리체내 베바시주맙 주입술 2년 경과 관찰 결과 시력의 유의한 호전이 유지되었다. CRVO에서 술 전 OCT 소견상 장액망막박리를 보일 경우 재주사의 빈도가 더 높았다.
Abstract
Purpose: The authors evaluated the 2-year clinical results of intravitreal bevacizumab injection in retinal vein occlusion (RVO). Methods: Thirty-two eyes of 32 patients treated with an intravitreal bevacizumab injection of 1.25 mg (0.05 ml) for RVO (branch RVO: 22 eyes, central RVO: 10 eyes), repeated 3 times at a 6-week interval and were available for a follow-up period of at least 2 years were retrospectively reviewed. Best-corrected visual acuity (BCVA) before treatment and 6, 12, and 24 months after 3 serial injections, was recorded. The optical coherence tomography (OCT) results were analyzed to identify prognostic factors for recurrent macular edema that needed reinjection. Results: Two years after the treatment, mean BCVA was significantly improved (p = 0.000). Out of 32 eyes, 16 (branch RVO: 8 eyes; central RVO: 8 eyes) needed reinjection because of recurrent macular edema. In central RVO, a significantly high reinjection rate was shown in serous retinal detachment (SRD) compared with cystoid macular edema (CME) as identified in OCT findings (p = 0.049). Additionally, in branch RVO, a high reinjection rate was shown in SRD, although statistically not significant (p = 0.375). Conclusions: In patients with RVO, a significant visual improvement was maintained for at least 2 years after intravitreal bevacizumab injection. Based on OCT results, SRD showed a high reinjection rate compared with CME in CRVO.
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