This article is more than 5 years old. Information may no longer be current.
PRK enhancement after LASIK corrects near, distance visual acuity
Click Here to Manage Email Alerts
PRK enhancement after LASIK improved visual acuity and reduced cylinder in cases that were not suitable for flap relifting, according to study findings.
The retrospective study included 43 patients who underwent photorefractive keratectomy (PRK) enhancement after LASIK; 29 patients were myopes and 14 were hyperopes. Patients with visually significant cataract, non-plano targets and follow-up shorter than 226 days were excluded from the analysis.
Outcome measures included uncorrected and corrected distance visual acuity (UDVA, CDVA), postoperative manifest refraction, change in lines of vision, actual vs. targeted change in spherical equivalent, haze and other complications, and the average interval between LASIK and PRK enhancement was 85.6 months.
Mean UDVA improved from 20/39 to 20/24 in the hyperopic group and from 20/45 to 20/22 in the myopic group; both improvements were statistically significant, according to the researchers.
UDVA was 20/40 or better in both groups at final follow-up, and was 20/20 or better in 50% of hyperopes and 65.5% of myopes.
Lines of CDVA were stable or improved in 85.7% of hyperopes and 66.7% of myopes.
Mean refractive error improved from +1.10 D to +0.38 D in the hyperopic group, and from –1.21 D to +0.34 D in the myopic group, according to the researchers.
Manifest refraction cylinder decreased from 0.84 D to 0.46 D in the hyperopic group and from 0.64 D to 0.26 D in the myopic group.
Disclosure: Davis and Hardten are consultants for Abbott Medical Optics. The remaining authors have no relevant financial disclosures.
Click Here to Manage Email Alerts