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백내장 수술 후 난시교정용 인공수정체를 이용한 난시 교정 효과

Effect of Toric Intraocular Lens Implantation on Astigmatism in Cataract Surgery

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초록

목적: 난시를 동반한 백내장 환자에서 백내장 수술 시 테크니스 토릭 인공수정체 삽입술의 난시교정 효과 및 안정성을 분석하고자하였다. 대상과 방법: 1D에서 4D의 각막 난시를 동반한 백내장 환자 중 2013년 6월부터 2014년 5월까지 서울대학교병원에서 임상시험 동의하에 백내장 제거술 및 테크니스 토릭 인공수정체 삽입술을 받은 14명 17안을 전향적으로 관찰하여 분석하였다. 수술 전과 후의 시력, 굴절력, 난시, 인공수정체 축, 고위수차의 변화를 술후 3개월까지 관찰하였다. 난시 분석에는 power vector analysis가 사용되었다. 결과: 나안시력(logMAR)은 술 전 평균 0.58 ± 0.34에서 3개월에 0.26 ± 0.43으로 유의하게 향상되었다. 평균 굴절난시는 술 전-2.67 ± 0.89D였고, 술후 3개월에 -0.59 ± 0.48D로 최종 77.9%의 유의한 감소 효과를 보였다. 난시벡터 분석 시 M, B, J0, J45 모두 술 전과 비교하여 유의하게 감소하였다. 수술 전 의도한 축과 술 후 3개월째 실제 인공수정체 축 간의 평균 차이는 3.26도만큼시계 방향으로 회전하였지만 통계적으로 유의하지 않았고, 회전은 대부분 술 후 한 달 이내에 발생하였다. 결론: 난시를 동반한 백내장 환자에서 초음파 유화술 및 테크니스 토릭 인공수정체 삽입술은 우수한 난시교정 효과 및 회전 안정성을 보였다.

Abstract

Purpose: To evaluate the efficacy of Tecnis® toric intraocular lens (IOL) implantation for the correction of astigmatism and rotational stability during cataract surgery in patients with cataract and astigmatism. Methods: We prospectively analyzed 17 eyes of 14 patients with 1 to 4 diopters (D) of corneal astigmatism who underwent phacoemulsification and Tecnis® toric IOL implantation at Seoul National University Hospital from June 2013 to May 2014. Informed consent was obtained from all participants before the clinical trial. We evaluated the changes in visual acuity, refraction, astigmatism, IOL axis and higher order aberration for 3 months postoperatively. Power vector analysis was used to analyze astigmatism. Results: The mean uncorrected visual acuity (log MAR) significantly improved from 0.58 ± 0.34 to 0.26 ± 0.43 at 3 months postoperatively. The mean refractive astigmatism was significantly decreased by 77.9% from a mean value of -2.67 ± 0.89 D to -0.59 ± 0.48 D at 3 months postoperatively. According to power vector analysis, M, B, J0, and J45 were significantly reduced after the surgery. The mean difference between achieved and intended IOL axis was 3.26 degrees clockwise at postoperative 3 months, which was statistically insignificant. Most of the rotational changes were observed within a month after the surgery. Conclusions: Phacoemulsification and Tecnis® toric IOL implantation in patients with cataracts and astigmatism showed efficacy for the correction of astigmatism and rotational stability.

참고문헌 (36)

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