English   español  
Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/29950
logo share SHARE logo core CORE   Add this article to your Mendeley library MendeleyBASE

Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL
Exportar a otros formatos:

Monochromatic modulation transfer function of the human eye for different pupil diameters: an analytical expression

AuthorsArtal, Pablo; Navarro, Rafael
KeywordsModulation transfer function (MTF)
Pupil sizes
Vision tests
Issue DateJan-1994
PublisherOptical Society of America
CitationJournal of the Optical Society of America A 11(1): 246-9 (1994)
AbstractThe modulation transfer function (MTF) of human eyes for different pupil sizes was measured in a group of normal young subjects by use of a double-pass method. Measurements were carried out in the fovea, with monochromatic red light, paralyzed accommodation, artificial pupils, and optimum spherical refraction in each subject. For each pupil size both the averaged MTF and the intersubject variability were calculated. MTF's were approximated by the sum of two exponential functions. This three-parameter function provides a better approximation to our ocular MTF's than do most of the previous parametric models (usually one exponential), especially at intermediate and high spatial frequencies. Further curve fitting of the parameters allowed us to obtain a general expression for the mean MTF as a function of both pupil diameter and normalized spatial frequency. This equation summarizes our estimates of the average monochromatic retinal image quality of the human eye for any pupil diameter with good accuracy and in a compact way, which allows one to incorporate the eye's image quality easily in any particular study.
DescriptionContiene: 2 tablas, 5 ilustraciones y fórmulas.
Publisher version (URL)http://www.opticsinfobase.org/abstract.cfm?URI=josaa-11-1-246
Appears in Collections:(CFMAC-IO) Artículos
Files in This Item:
File Description SizeFormat 
BBE89041-9DAD-CBB0-BB2EE0701B747F4B_578.pdf542,16 kBAdobe PDFThumbnail
Show full item record
Review this work

Related articles:

WARNING: Items in Digital.CSIC are protected by copyright, with all rights reserved, unless otherwise indicated.