| Comparison of Optical Quality Between Two Intraocular Lenses Using Double-Pass Based Optical Quality Analysis System. |
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Ae Young Kwak, Moonjung Choi, Kyoung Yul Seo, Ji Min Ahn |
1The Institute of Vision Research, Department of Ophthalmology, Yonsei University College of Medicine, Seoul, Korea.
2Siloam Eye Hospital, Seoul, Korea. 24mini@naver.com |
| 두 종류 비구면 인공수정체 삽입 후 Double-pass 원리를 이용한 시력의 질 비교 |
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곽애영1,2⋅최문정1⋅서경률1⋅안지민2 |
The Institute of Vision Research, Department of Ophthalmology, Yonsei University College of Medicine1, Seoul, Korea
Siloam Eye Hospital2, Seoul, Korea |
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| Abstract |
PURPOSE
To compare postoperative optical qualities between two types of 1-piece aspheric intraocular lenses using the double-pass technique. METHODS: Uncorrected visual acuity (UCVA), best corrected visual acuity (BCVA), and spherical equivalent were evaluated in the subject groups; the first which included 25 eyes implanted with Tecnis(R) ZCB00 and the second which included 16 eyes implanted with Acrysof(R) IQ SN60WF. In addition, modulation transfer function (MTF) cut-off, Strehl ratio, and objective scattering index (OSI) were measured 6 months after cataract surgery in the 2 subject groups using Optical Quality Analysis System (OQAS, Visiometrics S.L., Terrasa, Barcelona, Spain) which is based on the double-pass technique. RESULTS: There were no significant differences in the spherical equivalent, UCVA, BCVA, and OSI between the 2 groups. However, both the MTF cut-off, and Strehl ratio showed statistically significant differences. The MTF cut-off (28.0 +/- 7.79 vs. 20.4 +/- 9.51 c/deg, p = 0.025) and Strehl ratio (0.14 +/- 0.04 vs. 0.12 +/- 0.05, p = 0.042) were higher in the Tecnis(R) ZCB00-implanted group. CONCLUSIONS: The difference in characteristics of intraocular lenses subtly affects the vision quality as measured by values such as MTF cut-off and Strehl ratio after cataract surgery. OQAS based on the double-pass technique is considered useful in more objective estimates of the real retinal image quality after cataract surgery which is difficult to explain simply by measuring visual acuity. |
| Key Words:
Double-pass;Optical Quality Analysis System;Visual quality;1-piece aspheric intraocular lenses |
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