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[Refractive surgery in myopia up to -6D].

V Lorencová¹, P Rozsíval, A Feuermannová

¹Ocní klinika Fakultní nemocnice, Hradec Králové.

Ceska a Slovenska Oftalmologie : Casopis Ceske Oftalmologicke Spolecnosti a Slovenske Oftalmologicke Spolecnosti

|August 6, 2003

Summary

Photorefractive keratectomy (PRK) and laser in situ keratomileusis (LASIK) are effective for myopia up to -6 diopters. Both refractive surgery methods show comparable and stable results 3-6 months post-operation.

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Area of Science:

Ophthalmology
Refractive Surgery
Corneal Surgery

Background:

Myopia, a common refractive error, affects millions globally.
Refractive surgery offers a solution for myopia correction.
Photorefractive keratectomy (PRK) and laser in situ keratomileusis (LASIK) are leading surgical techniques.

Purpose of the Study:

To compare the clinical outcomes and stability of PRK and LASIK for myopia up to -6 diopters.
To evaluate the long-term efficacy of these refractive surgery procedures.

Main Methods:

A retrospective study of 542 eyes (452 PRK, 90 LASIK) with myopia up to -6 D.
Refraction, uncorrected visual acuity (UCVA), and best-corrected visual acuity (BCVA) were assessed pre-operatively and at 1 week, 1, 3, 6, and 12 months post-operatively.

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Standard ophthalmic examinations were performed.

Main Results:

One year post-PRK: mean spherical refraction -0.35 ± 0.71 D, mean astigmatism -0.63 ± 0.38 D, UCVA 0.90 ± 0.19, BCVA 0.98 ± 0.11.
One year post-LASIK: mean spherical refraction -0.10 ± 0.81 D, mean astigmatism -1.05 ± 0.65 D, UCVA 0.80 ± 0.24, BCVA 0.86 ± 0.21.
Both PRK and LASIK demonstrated stable results over time.

Conclusions:

PRK and LASIK are safe and effective for correcting myopia up to -6 D.
Clinical outcomes are comparable to other centers and stable across years.
Both refractive surgery techniques achieve similar postoperative results within 3 to 6 months.