Spherical aberration, intraocular lens power, and image quality

William J. Neubert

doi:10.1117/12.147527

24 June 1993 Spherical aberration, intraocular lens power, and image quality

William J. Neubert

Proceedings Volume 1877, Ophthalmic Technologies III; (1993) https://doi.org/10.1117/12.147527
Event: OE/LASE'93: Optics, Electro-Optics, and Laser Applications in Scienceand Engineering, 1993, Los Angeles, CA, United States

Abstract

Spherical aberration for intraocular lenses is calculated based on surface contributions. The impact on image quality can be determined using a defined pupil function. Relationship between wavefront aberration and displacement of the best focal plane is discussed. The impact on ANSI Z80.7 power labelling is computed and found to be as great as 0.9 Diopters for standard lens types from the combination of media conversion error and spherical aberration. A pupil function is defined for solution of the Fresnel diffraction integral, in the Fraunhofer approximation, and is used to compute strehl ratio and modulation transfer function for symmetrical biconvex, convex plano and meniscus lenses in standard atmosphere and in situ. Results in air indicate best optical performance for convex plano lenses due to minimization of spherical aberration. In situ, all lenses analyzed performed approximately equally well. Use of this calculation technique for refractive bifocal IOL performance prediction is discussed.

Citation Download Citation

William J. Neubert "Spherical aberration, intraocular lens power, and image quality", Proc. SPIE 1877, Ophthalmic Technologies III, (24 June 1993); https://doi.org/10.1117/12.147527

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