Purchase this article with an account.
R. D. Stutzman, C. D. Coe, S. C. Schallhorn, K. Lombardo, K. S. Bower, D. Tanzer, R. C. VanRoekel, J. M. Burka, L. Peppers, D. A. Sediq; A Comparison of Alcon Wavefront Guided PRK and LASIK on US Military Service Members. Invest. Ophthalmol. Vis. Sci. 2007;48(13):5346.
Download citation file:
© ARVO (1962-2015); The Authors (2016-present)
To compare the visual outcomes, optical quality, and efficacy following conventional (STD) or wave-front guided (WFG) photorefractive keratectomy (PRK) and laser in situ keratomileusis (LASIK) for low and moderate myopia.
In this prospective 1 year multi-center clinical trial as part of an FDA IDE study conducted at two military institutions, a total of 135 subjects received either STD PRK(50 eyes), STD LASIK (25 eyes), WFG PRK (130 eyes), or WFG-LASIK (65 eyes).75 patients serving as a nomogram adjustment group had WFG treatment in one eye and STD treatment in the fellow eye (50 PRK and 25 LASIK). The final 60 subjects were treated with bilateral WFG PRK (40 patients) or WFG LASIK (20 patients) using an adjusted nomogram. All procedures were performed using the Alcon LADARVision 4000 excimer laser. Patients were examined at baseline and at 1, 3, 6, and 12 months. Examination included uncorrected visual acuity, manifest refraction, best spectacle corrected visual acuity, low contrast (25%) acuity under photopic and mesopic illumination, slit lamp biomicroscopy, wavefront aberrometry, and psychometric questionnaire.
Results were analyzed separately for the nomogram adjustment group and the adjusted nomogram cohort and are presented in Table 1.
Visual outcomes and efficacy were similar in the WFG-PRK and WFG-LASIK treatment groups. Both treatments achieved good objective and subjective results after treatment with a second-generation excimer laser. Additional testing is needed to determine if improvements in optical quality and operational performance justify the additional cost of WFG treatments for the large number of US military personnel undergoing refractive surgery.
This PDF is available to Subscribers Only