비구면 인공수정체와 구면 인공수정체의 술 후 Nd:YAG 레이저 후낭절개술 시행률 비교
Comparison of Nd:YAG Capsulotomy Rates between Spherical and Aspheric Intraocular Lenses
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목적: 최근 비구면 인공수정체가 널리 이용되고 있는데 비구면렌즈는 구면렌즈와 비교하여 렌즈의 표면의 모양과 두께 등이 다르므로 이에 따른 후낭절개술 시행과의 상관관계를 알아보고자 한다. 대상과 방법: 2006년 3월 1일부터 2009년 10월 31일까지 백내장 수술 후 구면인공수정체 SA60AT (66안), SN60AT (48안) (총114안)와 비구면 인공수정체인 SN60WF (187안)를 삽입한 환자를 대상으로 수술 후 6개월의 후낭절개술 시행을 후향적으로 비교하였다. 그리고 한 환자에서 양안에 두 종류의 렌즈를 각각 넣은 10명이 있어 분석을 따로 시행하였다. 결과: 구면인공수정체군에서 114안 중 2안(1.8%), 비구면 인공수정체군에서는 187안 중 7안(3.2%)에서 후낭절개술을 시행하였으나 통 계적으로 유의한 차이는 없었다(p=0.359). 양안에 다른 렌즈를 넣은 10명의 환자 중 비구면 인공수정체군에서 1안 발생하였으나 통계 적으로 유의하지 않았다(p=0.500). 결론: SN60WF와 SN60AT, SA60AT 렌즈에서 인공수정체의 디자인 특히 후면의 형태가 Nd:YAG 레이저 후낭절개술 시행률에 영향을 주지 않았다.
Abstract
Purpose: The purpose of the present study is to compare Nd:YAG capsulotomy rates between spherical and aspheric intraocular lenses. Methods: The present retrospective study enrolled patients who received cataract surgery by a single surgeon between March 1, 2006 and October 31, 2009. Patients included in the study were implanted with SA60AT spherical intraocular lenses (Alcon, Fort Worth, TX, USA, 66 eyes), SN60AT spherical intraocular lenses (Alcon, 48 eyes; a total of 114 eyes), or SN60WF aspheric intraocular lenses (Alcon, 187 eyes). The Nd:YAG capsulotomy rates were compared between the two groups 6 months after the operation. Ten patients who were implanted with a spherical intraocular lens in one eye and an aspheric intraocular lens in the contralateral eye were analyzed separately. Results: Nd:YAG capsulotomy was performed in 2 of 114 eyes (1.8%) in the spherical intraocular lens group and 7 of 187 eyes (3.2%) in the aspheric intraocular lens group; no significant difference was found (p = 0.359). Among the 10 patients who were implanted with 2 different intraocular lenses, Nd:YAG capsulotomy was performed in only 1 eye in the aspheric intraocular lens group; no significant difference was found (p = 0.500). Conclusions: The design of the intraocular lens, especially the shape of the posterior optic, does not influence the rate of Nd:YAG capsulotomy.
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