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Excimer laser photorefractive keratectomy: one year follow-up
M L Kwitko1, J Gow, F Bellavance
1Department of Ophthalmology, Sir Mortimer Davis Jewish General Hospital, McGill University Faculty of Medicine, Montreal, Quebec, Canada.
Ophthalmic Surgery and Lasers
|May 1, 1996
Summary
Photorefractive keratectomy (PRK) using an excimer laser effectively corrects low to moderate myopia. While successful for low myopia, its efficacy decreases with higher prescriptions, though it remains safe.
Area of Science:
- Ophthalmology
- Laser Surgery
Background:
- Myopia, a common refractive error, affects distance vision.
- Excimer laser photorefractive keratectomy (PRK) is a surgical option for myopia correction.
Purpose of the Study:
- To evaluate the effectiveness of 193 nm excimer laser PRK for low, moderate, and high myopia.
- To assess visual outcomes and safety after PRK surgery.
Main Methods:
- 181 eyes from 114 patients underwent PRK.
- Follow-up was conducted for a minimum of 12 months post-surgery.
Main Results:
- 96% of low myopia eyes achieved 20/40 or better uncorrected visual acuity (UVA).
- 69% of moderate myopia eyes achieved 20/40 or better UVA.
- 29% of high myopia eyes achieved 20/40 or better UVA.
- No significant major complications were reported.
Conclusions:
- PRK is a safe and effective procedure for correcting low to moderate myopia.
- The accuracy of PRK decreases with increasing myopia severity.