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Proceedings Paper

Photorefractive keratectomy (PRK) at 193 nm using an erodible mask: new developments and clinical progress
Author(s): Michael Gordon; Theo Seiler; Joseph P. Carey; Marc D. Friedman; N. M. Fredrik Johnsson; Michael C. King; David F. Muller
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Paper Abstract

This paper reports on our progress using an erodible mask to perform photorefractive keratectomy (PRK) for the correction of myopic astigmatism. We describe modifications to the mask, the mask eye cup and the surgical microscope aimed at simplifying the procedure and improving the ergonomics of the hardware. We report the clinical results of the post-op exam for 20 patients who have undergone PRK for myopic astigmatism under a Phase IIA study. The results compare favorably with an earlier Phase IIA study for performing PRK with a computer-controlled iris. Most important, the clinical data show the absence of any significant corneal haze and no significant decrease in spectacle corrected visual acuity. Although more long term follow-up is needed, the preliminary results support the safety and effectiveness of using an erodible mask to perform PRK for myopic astigmatism.

Paper Details

Date Published: 24 June 1993
PDF: 7 pages
Proc. SPIE 1877, Ophthalmic Technologies III, (24 June 1993); doi: 10.1117/12.147553
Show Author Affiliations
Michael Gordon, Vision Surgery and Laser Ctr. (United States)
Theo Seiler, Freie Univ. Augenklinik (Germany)
Joseph P. Carey, Summit Technology, Inc. (United States)
Marc D. Friedman, Summit Technology, Inc. (United States)
N. M. Fredrik Johnsson, Summit Technology, Inc. (United States)
Michael C. King, Summit Technology, Inc. (United States)
David F. Muller, Summit Technology, Inc. (United States)

Published in SPIE Proceedings Vol. 1877:
Ophthalmic Technologies III
Jean-Marie A. Parel; Qiushi Ren, Editor(s)

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