• Influence of asphericity of th...

Result: Influence of asphericity of the anterior corneal surface in visual performance

Title:
Influence of asphericity of the anterior corneal surface in visual performance
Authors:
GONZALEZ ANERA, Rosario, RAMON JIMENEZ, José, DIAZ, José Antonio, DEL BARCO, Luis Jiménez
Source:
Optik (Stuttgart). 111(10):429-434
Publisher Information:
Jena: Elsevier, 2000.
Publication Year:
2000
Physical Description:
print, 17 ref
Original Material:
INIST-CNRS
Subject Terms:
Optics, Optique, Sciences exactes et technologie, Exact sciences and technology, Physique, Physics, Domaines classiques de la physique (y compris les applications), Fundamental areas of phenomenology (including applications), Optique, Optics, Formation des images et traitement optique, Imaging and optical processing, Fonctions de transfert optique et de transfert de modulation, Modulation and optical transfer functions, Sciences biologiques et medicales, Biological and medical sciences, Sciences biologiques fondamentales et appliquees. Psychologie, Fundamental and applied biological sciences. Psychology, Vertebres: systeme nerveux et organes des sens, Vertebrates: nervous system and sense organs, Oeil et annexes. Voies et centres visuels. Vision, Eye and associated structures. Visual pathways and centers. Vision, Anatomy and optics of eye, Aberration sphérique, Spherical aberration, Aberración esférica, Cornée, Cornea, Córnea, Etude théorique, Theoretical study, Estudio teórico, Fonction transfert modulation, Modulation transfer function, Función transferencia modulación, Oeil, Eye, Ojo, Surface asphérique, Aspheric surface, Superficie asférica
Document Type:
Academic journal Article
File Description:
text
Language:
English
Author Affiliations:
Departamento de Óptica, Facultad de Ciencias, Universidad de Granada, Granada 18071, Spain
ISSN:
0030-4026
Access URL:
http://pascal-francis.inist.fr/vibad/index.php?action=search&terms=817499
Rights:
Copyright 2001 INIST-CNRS
CC BY 4.0
Sauf mention contraire ci-dessus, le contenu de cette notice bibliographique peut être utilisé dans le cadre d’une licence CC BY 4.0 Inist-CNRS / Unless otherwise stated above, the content of this bibliographic record may be used under a CC BY 4.0 licence by Inist-CNRS / A menos que se haya señalado antes, el contenido de este registro bibliográfico puede ser utilizado al amparo de una licencia CC BY 4.0 Inist-CNRS
Notes:
Physics: optics

Vertebrates : nervous system and sense organs
Accession Number:
edscal.817499
Database:
PASCAL Archive

Further Information

In this work, we study the accuracy of the standard model of the anterior corneal surface, which assumes that the cornea and the other eye surfaces are conicoid. For this, we add a new asphericity term for modelling the anterior cornea and we study whether this has a significant influence on visual performance evaluating the monochromatic modulation transfer function (MTF). In the MTF computations, we include the spherical aberration and we use biometric data provided by an schematic eye model. The results confirm that the conicoid model for the eye surfaces may be valid for the posterior cornea, anterior and posterior lens, but not for the anterior cornea in order to make highly accurate predictions of visual performance. This information should be considered in eye-schematic models and have practical implications for processes such as refractive surgery, based on modelling the anterior cornea, and contact-lens design.