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

Research output: Contribution to journalArticle

45 Scopus citations


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 languageEnglish (US)
Pages (from-to)379-386
Number of pages8
JournalAmerican journal of ophthalmology
Issue number4
StatePublished - Jan 1 1990


ASJC Scopus subject areas

  • Ophthalmology

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