Elliptical ablations for the correction of compound myopic astigmatism by photoablation with apertures

John K. Shimmick; Lorne Bechtel

doi:10.1117/12.137434

14 August 1992 Elliptical ablations for the correction of compound myopic astigmatism by photoablation with apertures

John K. Shimmick, Lorne Bechtel

Proceedings Volume 1644, Ophthalmic Technologies II; (1992) https://doi.org/10.1117/12.137434
Event: OE/LASE '92, 1992, Los Angeles, CA, United States

Abstract

Elliptical photoablations have the advantage of correcting refractive sphere and cylinder without producing transition zones. This document characterizes the geometries of ellipses used for the simultaneous correction of sphere and cylinder. The implementation of elliptical ablations in ophthalmic excimer lasers with imaged apertures is discussed.

Citation Download Citation

John K. Shimmick and Lorne Bechtel "Elliptical ablations for the correction of compound myopic astigmatism by photoablation with apertures", Proc. SPIE 1644, Ophthalmic Technologies II, (14 August 1992); https://doi.org/10.1117/12.137434

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