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Proceedings Paper

Update on excimer laser photorefractive keratectomy (PRK) at Cedars-Sinai Medical Center: two-year experience
Author(s): Ezra I. Maguen M.D.; James J. Salz M.D.; Cathy Warren; Thanassis Papaioannou; Anthony B. Nesburn M.D.; Jonathan I. Macy M.D.; John Hofbauer M.D.; Warren S. Grundfest M.D.
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Paper Abstract

Our two year experience with excimer laser photorefractive keratectomy for the correction of myopia on 160 eyes of 128 patients is described. All eyes were treated with a VISX Twenty- Twenty excimer laser, with the following parameters: radiant exposure 160 mJ/cm2, frequency 5 Hz, ablation zone diameter 5.0 to 5.5 mm, and stromal ablation rate 0.18 to 0.33 (mu) /pulse. A suction fixation ring was used in all cases either with nitrogen flow (79 eyes) or without nitrogen flow (81 eyes) across the cornea. Follow-up ranged from one month (152 eyes) to 24 months (12 eyes). The results are stable between 3 and 24 months with less than 0.25 D change in the mean postoperative spherical equivalents. In eyes with a follow-up of 6 to 24 months, 77% to 100% were 20/40 or better uncorrected, and 84% to 92% were corrected to within +/- 1 D of emmetropia. Further follow-up is needed to assess the long term safety and efficacy of the procedure.

Paper Details

Date Published: 24 June 1993
PDF: 12 pages
Proc. SPIE 1877, Ophthalmic Technologies III, (24 June 1993); doi: 10.1117/12.147512
Show Author Affiliations
Ezra I. Maguen M.D., Cedars-Sinai Medical Ctr. (United States)
James J. Salz M.D., Cedars-Sinai Medical Ctr. (United States)
Cathy Warren, Cedars-Sinai Medical Ctr. (United States)
Thanassis Papaioannou, Cedars-Sinai Medical Ctr. (United States)
Anthony B. Nesburn M.D., Cedars-Sinai Medical Ctr. (United States)
Jonathan I. Macy M.D., Cedars-Sinai Medical Ctr. (United States)
John Hofbauer M.D., Cedars-Sinai Medical Ctr. (United States)
Warren S. Grundfest M.D., Cedars-Sinai Medical Ctr. (United States)

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

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