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KMID : 0360220080490081248
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Journal of the Korean Ophthalmological Society
2008 Volume.49 No. 8 p.1248 ~ p.1255
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Wavefront and Visual Function Analysis After Aspherical and Spherical Intraocular Lenses Implantation
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Ahn Hyun-seok
Kim Sun-Woong
Kim Tae-Im
Kim Eung-Kweon
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Abstract
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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. J Korean Ophthalmol Soc 49(8):1248-1255, 2008
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KEYWORD
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Asphericintraocularlens, Contrastsensitivity, Modulation ransferfunction, Sphericalaberration, Visualfunction
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