Study shows improvements to uncorrected distance visual acuity using wavefront-optimized vision correction
A transition from wavefront-guided correction to wavefront-optimized ablation with an excimer laser platform proved successful, according to a study published in the Journal of Refractive Surgery.
Investigators reported results of the first 285 laser-assisted in situ keratomileusis (LASIK) or photorefractive keratectomy (PRK) procedures performed at their center with Alcon's Allegretto Wave Eye-Q excimer laser.
The retrospective study included 285 eyes of 151 patients, of which 207 eyes of 106 patients underwent LASIK and 78 eyes of 45 patients had PRK. Investigators assessed uncorrected and corrected distance visual acuity, manifest refraction, keratometry and wavefront values before and after surgery. Minimum follow-up was three months.
Study results showed that 92% of myopic eyes and 63% of hyperopic eyes in the LASIK group targeted for emmetropia had uncorrected distance visual acuity of 20/20 at three months after surgery.
In the PRK group, 80% of myopic eyes targeted for emmetropia had uncorrected distance visual acuity of 20/20. The hyperopic subgroup in the PRK arm was too small for adequate statistical analysis.
Total wavefront aberrations and some higher-order aberrations diminished in the LASIK and PRK groups, the authors said.
Source: Journal of Refractive Surgery
Posted by Lee Mather
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