1.8 mm와 2.2 mm 동축 소절개와 2.75 mm 절개 백내장 수술의 1년 결과
One-Year Outcome of Microcoaxial Cataract Surgery Using 1.8 mm and 2.2 mm Incisions Versus that of Conventional Cataract Surgery
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목적: 1.8, 2.2 mm Microcoaxial cataract surgery (MCCS)과 2.75 mm Conventional cataract surgery (CCS) 후 1년 결과를 비교했다. 대상과 방법: 1.8, 2.2 MCCS, CCS 각 40안을 대상으로 초음파 에너지 양, 초음파 사용시간, Cumulative dissipated energy (CDE)등을 비교하고 술 후 1일, 1, 2, 6달, 1년 각막내피세포 수, 각막두께, 수술 후 유발된 난시량 등을 비교했다. 결과: LOCS III NO4에서 1.8 MCCS가 타 두 군과 비교하여 큰 초음파 에너지의 양(p=0.031)과 CDE (p=0.029)를 보였고 술 1병일의각막 두께 증가율이 유의하게 높았다(p=0.043). 술 1년 후 시력과 각막내피세포는 세 군에서 차이가 없었으며 1년 후의 수술로 인해유발된 난시량은 1.8, 2.2 MCCS가 CCS에 비해 유의하게 적었다(p=0.046). 결론: 술 1년 후의 내피세포, 교정 시력이 모든 핵경화도에서 세 군 간에 유의한 차이를 보이지 않아 1.8, 2.2 MCCS는 CCS와 비슷한안정성을 보였으며, 수술 후 유발된 난시량이 CCS보다 적었다.
Abstract
Purpose: To compare the 1-year outcome of 1.8 mm and 2.2 mm microcoaxial cataract surgery (MCCS) versus 2.75 mm conventional cataract surgery (CCS). Methods: The present study evaluated 120 eyes (40 eyes in each group). The mean ultrasound power, ultrasound time (UST), and cumulative dissipated energy (CDE) were measured preoperatively and at 1 day, 1, 2, 6 months, and 1 year postoperative. Visual acuity, number of corneal endothelial cells, and surgically induced astigmatism (SIA) were compared. Results: In LOCS III NO4, 1.8 mm MCCS showed a statistically higher ultrasound time (p-value = 0.031) and CDE (p-value = 0.029), and the day 1 corneal thickness increase was relatively higher in 1.8 mm MCCS (p-value = 0.043) than other two groups. There were no differences in postoperative 1 year visual acuity or number of corneal endothelial cells among the groups. SIA was significantly lower in 1.8 mm and 2.2 mm MCCS compared to that of the conventional treatment (p-value = 0.046). Conclusions: There were no differences in postoperative 1 year mean endothelial cell density or corrected visual acuity between 1.8 and 2.2 mm MCCS and CCS at all cataract densities. The 1.8 mm and 2.2 mm MCCS techniques were as safe and effective as CCS, and SIA in 1.8 mm and 2.2 mm MCCS was significantly lower than that of CCS.
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