Abstract

The human eye has its best resolution in the fovea, which is located 4-8° off the optical axis. An intraocular lens (IOL) calculated with paraxial optics will thus have reduced performance in the fovea. Limits on the accuracy of the IOL placement lead to tilt and decentration, reducing the IOL performance in the fovea even further. Hence the IOL worst-case design should be optimized for a wide angle performance of at least ±12.5°. Rather than designing individual IOLs, a family of at least 5 IOLs for each power is designed with various combinations of the measured physical parameters of the eye: axial length, corneal curvature and asphericity, and anterior chamber depth. This allows the surgeon to select an IOL based on more than predicted IOL power alone.

© 1989 Optical Society of America