Wavefront-guided laser in situ keratomileusis using the WaveScan system for correction of low to moderate myopia with astigmatism: 6-month results in 277 eyes
Accepted 13 December 2004.
Purpose
To assess the safety and effectiveness of wavefront guided LASIK surgery using the Visx WaveScan system for correction of low to moderate myopia with astigmatism.
Setting
Multicenter study at 6 sites in the United States.
Methods
In this prospective nonrandomized clinical trial, treatments were performed at 6 sites in the United States using the WaveScan (CustomVue) guided excimer laser. A total of 351 eyes were enrolled, and 277 eyes were analyzed at 6 months.
Results
At 6 months, 94% of eyes achieved an uncorrected visual acuity (UCVA) of 20/20 or better and 74% achieved a UCVA of 20/16 or better. Sixty-nine percent of eyes had the same or better postoperative UCVA than their preoperative best spectacle-corrected visual acuity (BSCVA). Ninety percent of eyes were within ±0.5 diopter of intended correction. No eye lost more than 1 line of BSCVA. Total higher-order root-mean square (RMS), coma, and spherical aberration values were stable (P<.05).
Conclusion
The data support the safety and effectiveness of the WaveScan-guided customized laser ablation using the Visx Star S4 system for correction of low to moderate myopia with astigmatism.
From the Refractive Surgery Center, The Wilmer Eye Institute, The Johns Hopkins University (Jabbur), Baltimore, Maryland, and the Kraff Eye Institute (Kraff), Chicago, Illinois, USA
Reprint requests to Nada S. Jabbur, MD, The Wilmer Eye Institute at Greenspring, 10755 Falls Road, Suite 110, Lutherville, Maryland 21093, USA.
The authors are clinical investigators for Visx, Inc.
ABSTRACT