안내후방콘택트렌즈 삽입술 후 고위수차의 변화
Changes in Higher Order Aberration After Implantable Contact Lens Implantation
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목적: 유수정체 안내후방콘택트렌즈 삽입 후 고위수차의 변화를 알아보았다. 대상과 방법: 2008년 2월부터 2009년 10월까지 삽입술을 시행한 26안을 대상으로 술 전, 술 후 1주, 1개월, 3개월에 Hartmann-Shack 방식의 수차계(KR9000PW)로 눈 전체의 고위수차를 측정하였다. 술 전후에 각막중심 4 mm에서 총고위수차, 총구면수차, 총코마수차,총트레포일수차 그리고 3차항, 4차항의 RMS값의 변화를 분석하였다. 결과: 평균나이는 25.4세였고, 현성굴절검사상 환자의 평균 구면대응치는 -6.40D였다. 술 후 1주, 1개월, 3개월에 평균 구면대응치는각각 0.00 ± 0.13D, 0.03 ± 0.21D, -0.013 ± 0.12D이였다. 술 후 1주, 1개월, 3개월에 눈 전체의 총고위수차, 총구면수차, 총코마수차,총트레포일수차, 3차, 4차항의 고위수차 RMS값 간에는 통계적으로 유의한 차이가 없었으며, 술 전과의 비교도 통계적으로 유의한변화는 보이지 않았다(Wilcoxon-signed-ranks test, p<0.05). 결론: 유수정체 안내후방콘택트렌즈 삽입술 후 눈 전체의 각막중심 4 mm에서 고위수차는 변화가 없는 것으로 사료된다.
Abstract
Purpose: To evaluate the changes in higher-order aberrations (HOAs) after implantation of an ICL (implantable contact lens). Methods: Twenty-six eyes that had undergone ICL implantation between February 2008 and October 2009 were included. Ocular higher-order aberrations of all the eyes were measured using the Hartmann-Shack aberrometer (KR9000PW). Examinations were performed preoperatively, as well as one week, one month, and three months after ICL implantation. Changes in ocular total higher-order aberrations, total spherical aberration, coma aberration, trefoil aberration, and S3 and S4 calculated in the central 4-mm zone and expressed as root mean square (RMS) values were analyzed. Results: The mean patient age was 25.4 years, and the mean preoperative spherical equivalent was -6.40 diopters(D). The mean postoperative spherical equivalents were 0.00 ± 0.13D, 0.03 ± 0.21D, -0.013 ± 0.12D at one week, one month,and three months, respectively. There were no statistically significant differences in ocular higher-order aberration RMS,including spherical, coma, or trefoil aberration, at one week, one month, or three months postoperative or between preoperative and postoperative measurements. Conclusions: There is no significant change of ocular higher order aberration in the central 4-mm zone after ICL implantation.
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