Journal of The Korean Ophthalmological Society (대한안과학회지)

The Korean Ophthalmological Society (대한안과학회)
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Comparison of Wavefront Analysis and Visual Function Between Monofocal and Multifocal Aspheric Intraocular Lenses

다초점 비구면 인공수정체의 술 후 시력, 고위수차, 대비감도 및 조절력, 초점심도

Yoon, Jong-Uk;Chung, Jae-Lim;Hong, Jin-Pyo;Ha, Byoung-Jin;Kim, Tae-Im;Kim, Eung-Kweon
윤종억;정재림;홍진표;하병진;김태임;김응권

  • Published : 2009.02.15
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Abstract

Purpose: To compare postoperative vision, high-order aberrations, contrast sensitivity, power of accommodation, and depth of focus of monofocal aspheric (TECNIS ZA9003) and multifocal aspheric (TECNIS ZM900) intraocular lenses (IOL). Methods: Thirty-four eyes which received intraocular lens implantation in the posterior chamber were equally divided into two groups: TECNIS ZA9003 (17 eyes) and TECNIS ZM900 (17 eyes). Before and three months after surgery, visual acuities at near, intermediate, and far distances, and depth of focus were recorded. High order aberrations, spherical aberrations and accommodation power were measured with iTrace, and contrast sensitivity was evaluated using Optec 6500. An independent T-test analysis was used to compare the two groups. Results: There were no significant differences of high order aberrations, spherical aberrations, accommodation power, or distance vision between the two groups at three months postoperatively. The multifocal IOL (TECNIS ZM900) group revealed better intermediate and near vision (p<0.01) and deeper depth of focus, and lower contrast sensitivities (p=0.03) than the monofocal IOL group. Conclusions: There was no difference in accommodation power between the two groups, but multifocal TECNIS ZM900 IOL exceeds monofocal TECNIS ZA9003 IOL in intermediate and near vision due to diffractive lens design and less spherical aberration by its asphericity.

목적: 단초점 비구면 인공수정체인 TECNIS ZA9003와 다초점 비구면 인공수정체인 TECNIS ZM900의 술 후 시력, 고위수차, 대비감도 및 조절력, 초점심도를 비교하고자 하였다. 대상과 방법: 인공수정체 후방삽입술을 시행한 34안을 ZM900 삽입군(17안)과 ZA9003 삽입군(17안)으로 구분하여 술 전과 술 후 3개월에 원거리 시력 및 중간거리 시력, 근거리 시력, 초점심도를 측정하고 i-Trace를 이용하여 고위수차, 구면수차, 조절력을 측정하고 Optec 6500을 이용하여 대비감도를 측정하여 독립 T-검정으로 두 군의 차이를 비교하였다. 결과: 술 후 3개월째 고위수차, 구면수차, 조절력, 원거리 시력에서 두 군은 유의한 차이를 보이지 않았다. ZM900군은 ZA9003군에 비해 더 낮은 대비감도(P=0.03), 더 높은 근거리 시력 및 중간거리 시력(P<0.01), 더 깊은 초점심도를 보였다. 결론: TECNIS ZM900은 단초점 인공수정체와 조절력에는 차이가 없으나 인공수정체의 렌즈의 회절기능으로 근거리와 중간거리 시력을 향상시키고, 비구면 형태로 구면수차를 감소시키는 기능을 보여주었다.

Keywords

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