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Grid Laser Photocoagulation After Intravitreal Triamcinolone for Macular Edema Associated With Branch Retinal Vein Occlusion

분지망막정맥폐쇄에 합병된 황반부종에서 유리체강내 트리암시놀론 주입과 격자광응고술의 효과

Lee, Seung-Uk;Kim, Su-Jin;Park, Young-Min;Lee, Ji-Eun;Oum, Boo-Sup
이승욱;김수진;박영민;이지은;엄부섭

  • Published : 2009.05.15

Abstract

Purpose: To evaluate the clinical outcomes of macular laser photocoagulation after intravitreal injection of triamcinolone acetonide (IVTA) for macular edema in branch retinal vein occlusion (BRVO). Methods: In this retrospective study we reviewed the medical records of patients who had been treated with an intravitreal injection of 4 mg triamcinolone acetonide for macular edema due to BRVO and followed up for more than six months. We divided the eyes into two groups, namely, the IVTA-only group and the additional grid laser group after IVTA. Visual acuity, macular thickness, intraocular pressure, and abundance of IVTA were compared. Results: A total of 41 eyes underwent IVTA, 21 of which were treated with additional macular grid photocoagulation. The difference in best corrected visual acuity before IVTA between the two groups was not statistically significant. Laser photocoagulation was performed at an average of 2.8 months after IVTA. Final VA and foveal thickness improved significantly after IVTA in both groups and showed no significant difference between the two groups. After six months a second injection was required in six eyes in the IVTA group and one eye in the photocoagulation group due to recurrence of macular edema, the difference of which was significant (p=0.04). Conclusions: IVTA in BRVO patients improved macular edema and visual acuity. Combined grid photocoagulation after IVTA lowered the recurrence rate of macular edema. Grid photocoagulation can be considered as a useful adjuvant for avoiding repeated administration of intravitreal triamcinolone.

목적: 분지망막정맥폐쇄로 인한 황반부종 환자에서 유리체강내 트리암시놀론 주입술과 추가로 시행한 격자광응고술의 임상적 결과를 알아보고자 하였다. 대상과 방법: 트리암시놀론 주사 후 6개월 이상 경과관찰이 가능하였던 환자의 의무기록을 후향적으로 분석하여, 주사 후 격자광응고술을 시행하였던 군과 하지 않았던 군으로 나누었고, 주사 전 및 주사 후 최대교정시력, OCT상 황반두께와 황반부종의 재발 빈도를 비교하였다. 결과: 주사 시행 받은 총 41안 중 격자광응고술은 20안에서 시행되었다. 레이저는 주사 후 평균 2.8개월에 실시하였으며, 최종시력은 두 군 사이 유의한 차이가 없었다. 중심황반두께는 두 군 모두 주사 후 유의하게 감소하였으며, 주사 후 6개월간 황반부종의 재발로 인한 재주사의 빈도는 주사만 시행 받았던 군에서 6안(30%)에서, 레이저를 받은 군에서는 1안(5%)으로 유의한 차이를 보였다(p=0.04). 결론: 망막정맥폐쇄에서 트리암시놀론 주입술은 황반부종을 감소시키고, 시력향상에 도움을 주었다. 주사 후 추가로 시행한 격자광응고 술은 부종의 재발을 억제하는 효과가 있으므로, 트리암시놀론 반복 주사에 따른 부작용을 줄일 수 있을 것으로 기대된다.

Keywords

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