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Article
December 1993

Comparison of Excimer Laser Treatment of Astigmatism and Myopia

Author Affiliations

From the Department of Ophthalmology, University of Melbourne (Australia). The members of the Excimer Laser and Research Group are listed at the end of the article. The authors have no financial interest in the VISX Twenty/Twenty.

Arch Ophthalmol. 1993;111(12):1621-1626. doi:10.1001/archopht.1993.01090120043019
Abstract

Objective:  To assess the safety and efficacy of excimer laser treatment of myopic astigmatism and to compare this with the excimer laser treatment of myopia.

Design:  A prospective, open study of consecutive patients having excimer laser treatment of myopic astigmatism or myopia.

Settings:  Patients were recruited from 18 private ophthalmic practices.

Patients:  Fifty-four eyes received treatment for astigmatism and 66 eyes for myopia. One patient was lost to follow-up, and another underwent an ineffective ablation.

Interventions:  A V1SX Twenty/Twenty excimer laser was used to perform either photoastigmatic refractive keratectomy or photorefractive keratectomy.

Main Outcome Measures:  Refraction and visual acuity with and without correction were assessed preoperatively and postoperatively.

Results:  At 6 months, 17 (85%) of the 20 patients receiving photoastigmatic refractive keratectomy were within 1 diopter of plano refraction, and 19 (95%) of 20 had uncorrected visual acuity of 6/12 (20/40) or better. For patients receiving photorefractive keratectomy, these figures were 28 (88%) of 32 patients and 28 (88%) of 32 patients, respectively.

Conclusions:  Excimer laser surgery offers an effective option in the treatment of myopic astigmatism.

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