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Clinical results of photorefractive keratectomy in patients with myopia greater than -8D

Poster Details


First Author: T.Mrakovic SERBIA

Co Author(s): M. Jankov   V. Jovanovic   L. Nikolic              

Abstract Details

Purpose:

A prospective study of the safety and efficacy of photorefractive keratectomy (PRK) in patients with a spherical equivalent (SEQ) greater than -8 D using the WaveLight ALLEGRETTO WAVE Eye-Q laser.

Setting:

LaserFocus - Centre for Eye Microsurgery, Belgrade, Serbia

Methods:

Twenty-one eyes of 13 patients with the spherical equivalent (SEQ) greater than -8 D were monitored over a year. The PRK was performed with the WaveLight ALLEGRETTO WAVE Eye-Q laser in the optical zone of 6.0 mm, while phototherapeutic keratectomy (PTK) for 50 micrometers and 6.5 mm optical zone was used for the removal of the epithelium. Before and after the ablation, a near-freezing point cold Ringer’s solution was used for 30 seconds, and immediately after the use of the eximer laser, 0.02% mitomycin was applied for 60 seconds.

Results:

Three months after PRK , all patients showed a statistically significant improvement in uncorrected visual acuity, while no eyes has lost any line of the best corrected visual acuity (BCVA). SEQ was reduced from -10.35 +/- 2.12 D to -0.68 +/- 0.78 D, and BCVA was increased from 0.73 +/- 1.27 to 0.81 +/- 1.16, without achieving statistical significance. Similar results were maintained 6 months after the intervention, while after a year SEQ increased to 1.61 +/- 1.18 D, while BCVA was further increased to 0.88 +/- 1.34.

Conclusions:

The results of PRK using the WaveLight ALLEGRETTO WAVE Eye-Q lasers in patients with myopia greater than -8 D demonstrate a high level of safety and a very good accuracy. The correct selection of patients and the application of the appropriate refractive method is crucial for achieving good results.

Financial Disclosure:

None

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