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M. Baumeister, J. Bühren, T. Kasper, T. Kohnen; Intraocular Lens Tilt and Decentration and Wavefront Aberrations in Spheric and Aspheric Intraocular Lenses . Invest. Ophthalmol. Vis. Sci. 2005;46(13):811.
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© ARVO (1962-2015); The Authors (2016-present)
Purpose: Comparison of the influence of intraocular lens (IOL) optic position on higher–order wavefront aberrations after implantation of spheric and aspheric foldable IOLs. Methods: Eighteen patients with age–related cataract received a spheric IOL (AMO AR40e) in one eye and an aspheric IOL (Pfizer Tecnis Z9000) in the fellow eye. Three months postoperatively, ocular wavefront aberrations were measured using a Hartmann–Shack aberrometer. IOL tilt and decentration were evaluated with Scheimpflug photography. The influence of IOL tilt and decentration on total higher–order aberrations (HOA), spherical–like aberration and coma–like aberration in both IOLs was compared. Results: Mean optic tilt was 2.89 ± 1.46° for the spheric IOL and 2.85 ± 1.36° for the aspheric IOL. Optic decentration measured 0.19 ± 0.12 mm for the spheric IOL and 0.27 ± 0.16 for the aspheric IOL. The spheric IOL showed a significant correlation between optic decentration and spherical–like aberration (r = 0.59, P = 0.009), correlations between IOL tilt and decentration and total HOA or coma–like aberration were not significant. The aspheric IOL shoewd no significant correlations between IOL tilt or decentration and total HOA, spherical–like, or coma–like aberrations. Conclusions: Both IOLs showed equally good optic positioning. IOL tilt and decentration of low magnitude have little influence on higher–order aberrations with spheric and aspheric IOLs. The aspheric IOL design might decrease the influence of optic dislocation on higher–order aberrations.
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