Evaluation of Alcon Ladarvision Wavefront-Guided PRK

Inclusion Criteria

• •Subjects will be recruited from those active duty soldiers that have requested refractive surgery. Subjects must be eligible for medical care at WRAMC.
• •Male or female, of any race, and at least 21 years old at the time of the pre-operative examination, and have signed an informed consent. The lower age limit of 21 years is intended to ensure documentation of refractive stability.
• •Manifest refractive spherical equivalent (MSE) of up to -6 diopters (D) at the spectacle plane with refractive cylinder up to 3.00D.
• •At least five images must be capturesd in both eyes (dilated) with a pupil size of at least 7mm.
• •Manifest refraction and LADARWave™ refractions must be within 1.00 D and the CustomCornea® software must allow for treatment with a 6.5mm minor axis and 9mm ablation zone.
• •Best spectacle corrected visual acuity of 20/20 or better in both eyes.
• •Demonstrated refractive stability, confirmed by clinical records. Neither the spherical nor the cylindrical portion of the refraction may have changed more than 0.50D during the 12-month period immediately preceding the baseline examination, sa confirmed by clinical records.
• •Soft contact lens users must have removed their lenses at least 2 weeks before baseline measurements. Hard contact lens users (PMMA or rigid gas permeable lenses) must have removed their lenses at least 4 weeks prior to baseline measurements adn have 2 central Keratometry readings and 2 manifest refractions taken at least 1 week apart that do not differ by more than 0.50D in either meridian; mires should be regular.
• •Located it the greater Washington DC Area for a 12-month period.
• •Exhibits strong motivation for attending the follow-up visits.
• •Consent of the subject's command (active duty) to participate in the study.
• •Access to transportation to meet follow-up requirements.