Views: 1,481 | Downloads:
194
| Responses: 0
| XML | Respond to this article | Alert & updates | Request permissions | Email to a friend |
Original ArticleOpen Access
Wavefront and Ocular Spherical Aberration after Implantation of Different Types of Aspheric Intraocular Lenses Based on Corneal Spherical Aberration
Chantra S 
,
Pachimkul P ,
Naripthaphan P
,
Pachimkul P ,
Naripthaphan P Background: To determine the ocular spherical aberration after using preoperative corneal spherical aberration guided
aspheric IOL selection for cataract surgery.
Material and Method: Twenty-six eyes of cataract patients were scheduled for cataract surgery with aspheric IOL implantation
based on preoperative corneal spherical aberration (SA) measured by Galilei corneal topography. The target postoperative
total wavefront spherical aberration was zero. Three types of IOL were used in this study: TecnisZA9003 (Abbott Medical
Optics Inc) with spherical aberration of -0.27 μm; Acrysof IQ SN60WF (Alcon Inc.) with spherical aberration of -0.20 μm
and B&L Akreos with zero spherical aberration. Ocular spherical aberration was measured with a Wave Light machine 3
months postoperatively to demonstrate the total ocular spherical aberration.
Results: The preoperative mean corneal spherical aberration in the 3 groups was 0.351 + 0.08, 0.181 + 0.04, and 0.056 +
0.03 microns respectively. All 26 eyes of 26 patients completed the 3-month follow-up visit. Postoperative ocular spherical
aberration of the 3 groups were: TecnisZA9003 (10 eyes) +0.023 + 0.011 μm.; Acrysof IQ SN60WF (11 eyes) +0.045 + 0.018
μm; and B&L Akreos (5 eyes) +0.018 + 0.008 μm. These values were significantly lower than the predicted values in the
Tecnis and Akreos groups and there was no correlation between the actual postoperative ocular spherical aberration and the
predicted ocular spherical aberration in all groups.
Conclusion: The implantation of an aspheric intraocular lens based on preoperative corneal spherical aberration is effective
in reducing total ocular spherical aberration and improving visual function.
Keywords: Spherical aberration, Aspheric intraocular lens, Wavefront analysis, Higher order aberration
aspheric IOL selection for cataract surgery.
Material and Method: Twenty-six eyes of cataract patients were scheduled for cataract surgery with aspheric IOL implantation
based on preoperative corneal spherical aberration (SA) measured by Galilei corneal topography. The target postoperative
total wavefront spherical aberration was zero. Three types of IOL were used in this study: TecnisZA9003 (Abbott Medical
Optics Inc) with spherical aberration of -0.27 μm; Acrysof IQ SN60WF (Alcon Inc.) with spherical aberration of -0.20 μm
and B&L Akreos with zero spherical aberration. Ocular spherical aberration was measured with a Wave Light machine 3
months postoperatively to demonstrate the total ocular spherical aberration.
Results: The preoperative mean corneal spherical aberration in the 3 groups was 0.351 + 0.08, 0.181 + 0.04, and 0.056 +
0.03 microns respectively. All 26 eyes of 26 patients completed the 3-month follow-up visit. Postoperative ocular spherical
aberration of the 3 groups were: TecnisZA9003 (10 eyes) +0.023 + 0.011 μm.; Acrysof IQ SN60WF (11 eyes) +0.045 + 0.018
μm; and B&L Akreos (5 eyes) +0.018 + 0.008 μm. These values were significantly lower than the predicted values in the
Tecnis and Akreos groups and there was no correlation between the actual postoperative ocular spherical aberration and the
predicted ocular spherical aberration in all groups.
Conclusion: The implantation of an aspheric intraocular lens based on preoperative corneal spherical aberration is effective
in reducing total ocular spherical aberration and improving visual function.
Keywords: Spherical aberration, Aspheric intraocular lens, Wavefront analysis, Higher order aberration
Download:
PDF