| Wavefront and Visual Function Analysis After Aspherical and Spherical Intraocular Lenses Implantation. |
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Hyunseok Ahn, Sun Woong Kim, Eung Kweon Kim, Tae im Kim |
1Vision Research Institute, Department of Ophthalmology, Yonsei University College of Medicine, Seoul, Korea. tikim@yuhs.ac
2Department of Ophthalmology, Soonchunhyang University College of Medicine, Bucheon, Korea. |
| 비구면 인공수정체와 구면 인공수정체 삽입 수술 후 수차 및 시기능 비교 |
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안현석1ㆍ김선웅2ㆍ김응권1ㆍ김태임1 |
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Vision Research Institute, Department of Ophthalmology, Yonsei University College of Medicine¹, Seoul, Korea / Department of Ophthalmology, Soonchunhyang University College of Medicine, Bucheon2, Korea |
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| Abstract |
PURPOSE
To compare postoperative wavefront aberration and visual functions between aspherical Tecnis Z9003, a new acrylic aspheric intraocular lens (IOL), and spherical AcrySof SA60AT IOL. METHODS: Fifty patients (56 eyes) who underwent cataract extraction and were implanted with spherical or aspherical IOLs were randomly evaluated by wavefront analysis, including an examination of spherical aberration and higher-order aberrations using two different types of aberrometers (ray tracing and automatic retinoscope), manifested refraction, a contrast sensitivity test, and modulation transfer function (MTF), three months after surgery. RESULT: There were no statistically significant differences of spherical equivalent and best-corrected visual acuity between the two different IOL groups. However, the aspherical IOL group showed less spherical aberration and better contrast sensitivity and MTF than the spherical IOL group. CONCLUSIONS: Tecnis Z9003 could compensate for positive spherical aberrations of the cornea and improve contrast sensitivity and MTF, thereby improving visual function. |
| Key Words:
Aspheric intraocular lens;Contrast sensitivity;Modulation transfer function;Spherical aberration;Visual function |
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