Measured visual acuity	Outcome achieved using scanning laser with eye tracker (%)	Outcome achieved with wavefront-guided laser (%)
20/20 or better (uncorrected)	78.6	89.2
20/40 or better (uncorrected)	96.3	98.9
Within 0.5 diopters of intended correction	82.8	80.8
Within 1 diopter of intended correction	96.0	95.1