Abstract
Purpose :
To compare wavefront WF-optimized and WF-guided PRK in myopic patients.
Methods :
Forty eyes from 20 participants were prospectively randomized to receive either WF-optimized or WF-guided PRK with the WaveLight Allegretto Eye-Q 400-Hz excimer laser (Alcon, Inc., Hüenberg, Switzerland). One eye was randomized to recieve WF-guided PRK and the fellow eye was randomized to receive WF-optimized PRK. Eyes were randomized according to ocular dominance. Main outcome measures included uncorrected distance visual acuity (UDVA), corrected distance visual acuity (CDVA), <5% and <525% contrast sensitivity, and WF aberrometry data. Postoperative measurements were analyzed at three months.
Results :
The frequency with which the WF-optimized and WF-guided group attained a refractive error within ±0.25 diopters of emmetropia was not significantly different between groups (p >0.05). Furthermore, the frequency with which the WF-guided and WF-optimized groups achieved postoperative UDVA of ≥20/16 or ≥20/20 and the frequency with which the groups lost 1 or 2 or more lines or maintained their preoperative CDVA were not statistically different from each other (all P >0.05). There were no statistically significant differences in UDVA, CDVA, contrast sensitivity, astigmatism, coma, trefoil, or higher-order root mean square error between the groups (all P >0.05).
Conclusions :
Wavefront-optimized and Wavefront-guided PRK using the Alcon WaveLight Allegretto Eye-Q 400-Hz excimer laser platform provide similar results in myopic patients at 3 months post operative follow-up.
This is an abstract that was submitted for the 2017 ARVO Annual Meeting, held in Baltimore, MD, May 7-11, 2017.