A computer model for the evaluation of the effect of corneal topography on optical performance

J. J. Camp; L. J. Maguire; B. M. Cameron; R. A. Robb

doi:10.1016/S0002-9394(14)74602-1

A computer model for the evaluation of the effect of corneal topography on optical performance

J. J. Camp, L. J. Maguire, B. M. Cameron, R. A. Robb

Physiology & Biomedical Engineering

Research output: Contribution to journal › Article › peer-review

46 Scopus citations

Abstract

We developed a method that models the effect of irregular corneal surface topography on corneal optical performance. A computer program mimics the function of an optical bench. The method generates a variety of objects (single point, standard Snellen letters, low contrast Snellen letters, arbitrarily complex objects) in object space. The lens is the corneal surface evaluated by a corneal topography analysis system. The objects are refracted by the cornea by using raytracing analysis to produce an image, which is displayed on a video monitor. Optically degraded images are generated by raytracing analysis of selected irregular corneal surfaces, such as those from patients with keratoconus and those from patients having undergone epikeratophakia for aphakia.

Original language	English (US)
Pages (from-to)	379-386
Number of pages	8
Journal	American journal of ophthalmology
Volume	109
Issue number	4
DOIs	https://doi.org/10.1016/S0002-9394(14)74602-1
State	Published - 1990

ASJC Scopus subject areas

Ophthalmology

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10.1016/S0002-9394(14)74602-1

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title = "A computer model for the evaluation of the effect of corneal topography on optical performance",

abstract = "We developed a method that models the effect of irregular corneal surface topography on corneal optical performance. A computer program mimics the function of an optical bench. The method generates a variety of objects (single point, standard Snellen letters, low contrast Snellen letters, arbitrarily complex objects) in object space. The lens is the corneal surface evaluated by a corneal topography analysis system. The objects are refracted by the cornea by using raytracing analysis to produce an image, which is displayed on a video monitor. Optically degraded images are generated by raytracing analysis of selected irregular corneal surfaces, such as those from patients with keratoconus and those from patients having undergone epikeratophakia for aphakia.",

author = "Camp, {J. J.} and Maguire, {L. J.} and Cameron, {B. M.} and Robb, {R. A.}",

note = "Funding Information: From the Departments of Physiology (Mr. Camp, Mr. Cameron, and Dr. Robb) and Ophthalmology (Dr. Maguire), Mayo Clinic and Foundation, Rochester, Minnesota. This study was supported in part by Research to Prevent Blindness, Inc., New York, New York, National Institutes of Health grant RR 02540, and the Mayo Foundation, Rochester, Minnesota. This study was presented at the 16th Cornea Research Conference, Massachusetts Eye and Ear Infirmary, Boston, Massachusetts, Sept. 23,1989.",

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doi = "10.1016/S0002-9394(14)74602-1",

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AU - Maguire, L. J.

AU - Cameron, B. M.

AU - Robb, R. A.

N1 - Funding Information: From the Departments of Physiology (Mr. Camp, Mr. Cameron, and Dr. Robb) and Ophthalmology (Dr. Maguire), Mayo Clinic and Foundation, Rochester, Minnesota. This study was supported in part by Research to Prevent Blindness, Inc., New York, New York, National Institutes of Health grant RR 02540, and the Mayo Foundation, Rochester, Minnesota. This study was presented at the 16th Cornea Research Conference, Massachusetts Eye and Ear Infirmary, Boston, Massachusetts, Sept. 23,1989.

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N2 - We developed a method that models the effect of irregular corneal surface topography on corneal optical performance. A computer program mimics the function of an optical bench. The method generates a variety of objects (single point, standard Snellen letters, low contrast Snellen letters, arbitrarily complex objects) in object space. The lens is the corneal surface evaluated by a corneal topography analysis system. The objects are refracted by the cornea by using raytracing analysis to produce an image, which is displayed on a video monitor. Optically degraded images are generated by raytracing analysis of selected irregular corneal surfaces, such as those from patients with keratoconus and those from patients having undergone epikeratophakia for aphakia.

AB - We developed a method that models the effect of irregular corneal surface topography on corneal optical performance. A computer program mimics the function of an optical bench. The method generates a variety of objects (single point, standard Snellen letters, low contrast Snellen letters, arbitrarily complex objects) in object space. The lens is the corneal surface evaluated by a corneal topography analysis system. The objects are refracted by the cornea by using raytracing analysis to produce an image, which is displayed on a video monitor. Optically degraded images are generated by raytracing analysis of selected irregular corneal surfaces, such as those from patients with keratoconus and those from patients having undergone epikeratophakia for aphakia.

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A computer model for the evaluation of the effect of corneal topography on optical performance

Abstract

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