Astigmatism Research Today is a free monthly online journal that collates and summarizes the latest research about Astigmatism, including details on cornea, retina, treatment, types, signs, tests.

Ocular aberrations after cataract surgery with hydrophobic and hydrophilic acrylic intraocular lenses: comparative study.

Rohart C, Lemarinel B, Thanh HX, Gatinel D

Fondation Ophtalmologique Adolphe de Rothschild, Ophthalmology Department, Paris, France.

PURPOSE: To compare tilt and some higher-order aberrations (HOAs) in patients who had cataract surgery and implantation of 2 types of acrylic intraocular lens (IOL), the hydrophobic MA60AC (Alcon) or the hydrophilic XLSTABI (Ioltech). SETTING: Fondation Ophtalmologique Adolphe de Rothschild, Department of Pr Hoang-Xuan, Paris, France. METHODS: Sixty eyes were included in this study. Eyes in group 1 (n = 30) received the acrylic hydrophobic MA60AC IOL, and eyes in group 2 (n = 30) received the acrylic hydrophilic XLSTABI IOL. Optical aberrations were measured with Nidek OPD-Scan at least 1 month after cataract surgery for a 6.0 mm pupil diameter using a 6th-order Zernike polynomials decomposition. RESULTS: In group 1, the mean root-mean-square (RMS) coefficient for the total higher aberration was 0.86 microm +/- 0.38 (SD). The mean RMS of the tilt, coma, trefoil, tetrafoil, spherical aberration, and secondary astigmatism was 0.81 +/- 0.45 microm, 0.38 +/- 0.30 microm, 0.55 +/- 0.18 microm, 0.13 +/- 0.23 microm, 0.30 +/- 0.13 microm, and 0.17 +/- 0.21 microm, respectively. In group 2, the mean RMS coefficient for the total higher aberration was 0.72 +/- 0.31 microm. The mean RMS of the tilt, coma, trefoil, tetrafoil, spherical aberration, and secondary astigmatism was 0.55 +/- 0.30 microm, 0.24 +/- 0.19 microm, 0.50 +/- 0.23 microm, 0.07 +/- 0.22 microm, 0.32 +/- 0.13 microm, and 0.14 +/- 0.14 microm, respectively. There was a statistical difference in aberrations between the 2 groups for the tilt and the coma aberrations (P<.05). There were more aberrations in the MA60AC IOL group. CONCLUSIONS: The design of the IOL influenced ocular aberrations after cataract surgery. There were more tilt and coma aberrations in the MA60AC IOL group.

Published 21 July 2006 in J Cataract Refract Surg, 32(7): 1201-5.
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