Purchase this article with an account.
Kraig Bower, Lamarr Peppers, Rose Sia, Richard Stutzman, Joseph Pasternak, Denise Ryan, Edward Trudo; Visual Performance Comparison of Wavefront-optimized and Wavefront-guided Laser in situ keratomileusis (LASIK). Invest. Ophthalmol. Vis. Sci. 2013;54(15):3125.
Download citation file:
© ARVO (1962-2015); The Authors (2016-present)
To compare visual acuity and contrast sensitivity results after wavefront-guided (WFG) and wavefront-optimized (WFO) LASIK.
This was a prospective randomized study that compared visual acuity (VA) and contrast sensitivity (CS) before and after either WFG (n=18) or WFO (n=17) LASIK. Subjects were matched for preoperative refractive error (mean spherical equivalent = -3.28 ±1.33D) and age (31.6 ±8.1 years) WFG surgeries were performed using the VISX Star S4 (Abbott Medical Optics) and WFO surgeries with the Wavelight Allegretto Wave Eye-Q (Alcon Surgical). Corneal flaps were created using the Intralase femtosecond laser system (Abbott Medical Optics). Best corrected VA and small letter (20/25) CS were measured with the Super Vision back-illuminated letter chart (PrecisionVision®; PV) and low luminance, night vision assessed with the PV 25% Low Contrast Chart viewed through a dark green night vision filter. Measurements were obtained at baseline and at 1, 3 and 6 months postoperatively. Repeated measures ANOVA was used to compare WFO vs. WFG LASIK over time.
There was no significant difference in ablation depth (WFG: 49.9 ±11.9µ; WFO 57.6 ±21.7µ; p=0.20). All subjects retained excellent high contrast VA (20/16) with no difference between WFG and WFO, while CS improved slightly in the WFG group (p<0.05) and was 0.1 log units higher in WFG vs. WFO at 6 months post-op. Night vision performance also improved slightly with time (p<0.05).
High contrast visual acuity was comparable between WFO and WFG LASIK. WFG LASIK appears to be superior to WFO LASIK in terms of night vision performance and low contrast acuity.
This PDF is available to Subscribers Only