title: Design and evaluation of a null lens for testing the optical performance of silicone intraocular lenses.
abstract: A two-element null lens, optimized for a 20-diopter silicone intraocular lens (IOL), was designed and tested. The performance of the null lens was examined for silicone IOL's with in situ powers from 16 to 24 diopters. Improvements in resolution, resolution efficiency, and modulation transfer function were obtained over the tested power range.
authors.affiliation: Office of Science and Technology, HFZ-134, Center for Devices and Radiological Health, Food and Drug Administration, 9200 Corporate Boulevard, Rockville, Maryland 20850, USA. rwf@cdrh.fda.gov
authors.forename: R W
authors.initials: RW
authors.lastname: Faaland
authors.forename: L W
authors.initials: LW
authors.lastname: Grossman