Journal of The Korean Ophthalmological Society (대한안과학회지)

The Korean Ophthalmological Society (대한안과학회)
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The Change of Ocular Aberration after LASIK Surgery

라식 수술 후 안구 수차의 변화

Oh, Jae-Ryong;Kim, Jae-Suk;Lee, Do-Hyung
오재룡;김재석;이도형

  • Published : 20030200
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Abstract

Purpose : To evaluate the change of ocular aberration after LASIK using Zernike􀁳s polynomial expansions. Methods : Sixty eyes of thirty consecutive patients that underwent LASIK were examined prospectively. The ocular aberration was measured with Hartman-Shack aberrometer (WASCA Wavefront Analyzer, USA) at postoperative 30, 90, and 180 days. The postoperative values were compared with that of preoperation. Results : The average age is 27.6 years old. The range of preoperative refractory error were from -3.00 Diopter (D) to -11.00 D. The increase of spherical and triangular coma aberrations (4.7- fold and 3.5- fold, respectively), with respect to preoperative values. There were statistically significant differences between preoperative and postoperative high order RMS at the postoperative 180 days (p<0.05). Conclusions : The postoperative increases of RMS in higher order aberration, coma aberration, triangular aberration was observed.

목적 : 라식 수술 후 유발되는 안구 수차의 변화에 대하여 알아보고자 Zernike의 다항식을 이용하여 각 계수의 변화를 평가하였다. 대상과 방법 : 라식 수술을 받은 환자 30명 60안에서 수차계(WASCA Wavefront Analyzer, U.S.A.)를 이용하여 술 후 30일, 90일, 180일의 안구수차를 각 Zernike의 계수를 기준으로 측정해 술 전 측정치와 비교하였다. 결과 : 환자의 나이는 평균 27.6세였으며 술 전 굴절 대응치는 -3 D에서 -11 D였다. 술 후 180일에 Zernike의 계수 중 구면수차(Spherical aberration, 3rd aberration)와 Z (3,-3) 삼각코마(Triangular coma)가 술 후 180일에 각각 4.7배와 3.5배로 큰 증가를 보였으며 고순위 수차(Higher order aberration)에 해당하는 RMS의 평균은 0.41${\pm}$0.12로 술 전과 비교했을 떄 통계학적으로 유의한 차이를 보였다(p<0.05). 결론 : 라식 수술 후 구면수차와 삼각코마, 고순위수차의 RMS 측정치가 증가되었으며 추후 이러한 수차의 변화가 시력의 질에 미치는 영향에 대한 연구가 필요할 것으로 사료된다

Keywords

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