Wavefront and Visual Function Analysis After Aspherical and Spherical Intraocular Lenses Implantation.
10.3341/jkos.2008.49.8.1248
- Author:
Hyunseok AHN
1
;
Sun Woong KIM
;
Eung Kweon KIM
;
Tae im KIM
Author Information
1. Vision Research Institute, Department of Ophthalmology, Yonsei University College of Medicine, Seoul, Korea. tikim@yuhs.ac
- Publication Type:Original Article ; Randomized Controlled Trial
- Keywords:
Aspheric intraocular lens;
Contrast sensitivity;
Modulation transfer function;
Spherical aberration;
Visual function
- MeSH:
Cataract Extraction;
Contrast Sensitivity;
Cornea;
Humans;
Lenses, Intraocular;
Visual Acuity
- From:Journal of the Korean Ophthalmological Society
2008;49(8):1248-1255
- CountryRepublic of Korea
- Language:Korean
-
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.
