Photorefractive keratectomy (PRK) at 193 nm using an erodible mask: new developments and clinical progress

Michael Gordon M.D.; Theo Seiler; Joseph P. Carey; Marc D. Friedman; N. M. Fredrik Johnsson; Michael C. King; David F. Muller

doi:10.1117/12.147553

24 June 1993 Photorefractive keratectomy (PRK) at 193 nm using an erodible mask: new developments and clinical progress

Michael Gordon M.D., Theo Seiler, Joseph P. Carey, Marc D. Friedman, N. M. Fredrik Johnsson, Michael C. King, David F. Muller

Author Affiliations +

Proceedings Volume 1877, Ophthalmic Technologies III; (1993) https://doi.org/10.1117/12.147553
Event: OE/LASE'93: Optics, Electro-Optics, and Laser Applications in Scienceand Engineering, 1993, Los Angeles, CA, United States

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.

Citation Download Citation

Michael Gordon M.D., Theo Seiler, Joseph P. Carey, Marc D. Friedman, N. M. Fredrik Johnsson, Michael C. King, and David F. Muller "Photorefractive keratectomy (PRK) at 193 nm using an erodible mask: new developments and clinical progress", Proc. SPIE 1877, Ophthalmic Technologies III, (24 June 1993); https://doi.org/10.1117/12.147553

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