Open AccessTemporal multiplexing to simulate multifocal intraocular lenses: theoretical considerations
Author(s) -
Vyas Akondi,
Carlos Dorronsoro,
Enrique Gambra,
Susana Marcos
Publication year - 2017
Publication title -
biomedical optics express
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 1.362
H-Index - 86
ISSN - 2156-7085
DOI - 10.1364/boe.8.003410
Subject(s) - strehl ratio , multifocal intraocular lens , optics , monochromatic color , chromatic aberration , lens (geology) , focus (optics) , apodization , image quality , computer science , optical transfer function , chromatic scale , wavefront , physics , artificial intelligence , visual acuity , phacoemulsification , image (mathematics)
Fast tunable lenses allow an effective design of a portable simultaneous vision simulator (SimVis) of multifocal corrections. A novel method of evaluating the temporal profile of a tunable lens in simulating different multifocal intraocular lenses (M-IOLs) is presented. The proposed method involves the characteristic fitting of the through-focus (TF) optical quality of the multifocal component of a given M-IOL to a linear combination of TF optical quality of monofocal lenses viable with a tunable lens. Three different types of M-IOL designs are tested, namely: segmented refractive, diffractive and refractive extended depth of focus. The metric used for the optical evaluation of the temporal profile is the visual Strehl (VS) ratio. It is shown that the time profiles generated with the VS ratio as a metric in SimVis resulted in TF VS ratio and TF simulated images that closely matched the TF VS ratio and TF simulated images predicted with the M-IOL. The effects of temporal sampling, varying pupil size, monochromatic aberrations, longitudinal chromatic aberrations and temporal dynamics on SimVis are discussed.