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D. R. Shapiro; Achieving Patient-Assessed Super-Vision With Wavefront-Guided Laser Vision Correction. Invest. Ophthalmol. Vis. Sci. 2010;51(13):962.
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To assess patient ratings of postoperative compared to preoperative vision following LASIK to determine whether subjective "super-vision" was achieved.
Two hundred eyes of 100 consecutive patients were treated with Advanced CustomVue wavefront-guided LASIK with iris registration and a target of emmetropia. All eyes had thin flaps with a Zyoptix XP microkeratome (120-micron head) and were treated with topical cyclosporine for at least two weeks preoperatively and at least three months postoperatively. All procedures were performed by the author in a private clinic setting. A brief patient questionnaire comparing postoperative uncorrected vision to corrected preoperative vision was administered at the conclusion of their postoperative course, including any enhancement surgery if necessary.
There were no complications. Nearly all patients (96/100 or 96%) reported that their bilateral uncorrected vision after surgery was better than their vision with glasses or contact lenses before surgery. Four patients (4%) said pre- and post-op vision were equal (even though one of those subjects improved from 20/20 best-corrected to 20/10 UCVA). No patient said uncorrected vision after surgery was worse than preoperative corrected vision.
Super-vision cannot be adequately defined by Snellen acuity or contrast resolution testing as vision is ultimately a complex and subjective phenomenon. For this reason, subjective assessment of post-operative vision by patients is an important metric in assessing super-vision. By such patient-assessed measures, 96% of subjects in this study achieved super-vision following wavefront-guided LASIK surgery.
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