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[Comparative studies of wavefront aberration and contrast sensitivity after phacoemulsification and intraocular lens
Ming-bing Zeng1, Yi-zhi Liu, Qiang Yu
1Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou 510060, China.
Objective:
To study the difference of the contrast sensitivity and wavefront aberration of two eyes who undergone phacoemulsification and intraocular transplantation respectively.
Methods:
Sixty-three patients with cataract were included in the study. With the consent of the patients, one eye was implanted SA60AT intraocular lens and another eye was implanted Tennis Z9001 intraocular lens after phacoemulsification. One and three months post-surgery, the best corrected visual acuity was recorded by computer and comprehensive optometry. Contrast sensitivity was analyzed by CSV-1000. The corneal aberration was measured by Option Keratron Scout. The whole ocular aberration was evaluated by Allegretto Waver Analyzer at pupillary diameter 4 mm and 6 mm.
Results:
The best corrected visual acuity and the corneal spherical aberration, corneal coma aberration and RMS had no significant difference between the two groups. After one and three months, the contrast sensitivity of 3, 6, 12, 18c/d had statistic significance between the eye with and without glare through univariate split-plot analysis. The Z9001 contrast sensitivity value was much higher than the SA60AT groups. The results of Zernike polynomials C12, RMS4 and RMSh had statistic significance between the two groups through T-test. The Z9001 group value was much lower than the SA60AT groups.
Conclusions:
The Z9001 intraocular lens transplantation can reduce total ocular aberration, special the spherical aberration and improve visual acuity.
