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Proceedings Paper

Depth of focus extended intraocular lenses and their optical performances in a pseudophakic eye model
Author(s): Zhao-Qi Wang; Feng Rao; Yong-Ji Liu
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Paper Abstract

Eye model is firstly used to design and assess the performance of intraocular lenses (IOL) with extended depth of focus (DOF), including aspherical IOL, refractive multifocal IOL and diffractive multifocal IOL. The details of design and optimization are given, and the optical performance of the pseudophakic eye with the designed IOLs is assessed with the spot diagram and the visual acuity. For the pseudophakic eye with 3mm pupil, when the spherical aberration is fully corrected by the aspherical IOL, the best visual acuity reaches 1.2 with a DOF of only 1.4D. Whereas when the spherical aberration is 0.4λ, the best visual acuity is 0.9 with a DOF as much as 2.2D. With the implantation of refractive or diffractive multifocal IOL, the pseudophakic eye has fairly good distant and near vision, while the intermediate vision is worse. Diffractive multifocal IOL diverts 81% of the input light to two primary focuses equally, with the additional 19% of the light wasted as higher order diffraction. Refractive multifocal IOL diverts all the light to two focuses but the light distribution varies with the pupil diameter.

Paper Details

Date Published: 7 October 2010
PDF: 9 pages
Proc. SPIE 7655, 5th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Advanced Optical Manufacturing Technologies, 76550D (7 October 2010); doi: 10.1117/12.866410
Show Author Affiliations
Zhao-Qi Wang, Nankai Univ. (China)
Feng Rao, Nankai Univ. (China)
Vehicle Lamp Testing Lab. of Jiangsu Entry-Exit Inspection & Quarantine Bureau (China)
Yong-Ji Liu, Nankai Univ. (China)


Published in SPIE Proceedings Vol. 7655:
5th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Advanced Optical Manufacturing Technologies

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