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Purpose: To compare visual outcomes between wavefront-guided photorefractive keratectomy (PRK) and wavefront-guided laser in situ keratomileusis (LASIK)., Setting: Academic center, Salt Lake City, Utah, USA., Methods: In this randomized prospective study, myopic eyes were treated with wavefront-guided PRK and or wavefront-guided LASIK using a Visx Star S4 CustomVue platform with iris registration. Primary outcome measures were uncorrected (UDVA) and corrected (CDVA) distance visual acuities and manifest refraction. Secondary outcome measures were higher-order aberrations (HOAs) and contrast sensitivity., Results: The PRK group comprised 101 eyes and the LASIK group, 102 eyes. At 6 months, the mean UDVA was -0.03 logMAR +/- 0.10 [SD] (20/19) and 0.07 +/- 0.09 logMAR (20/24), respectively (P = .544). In both groups, 75% eyes achieved a UDVA of 20/20 or better (P = .923); 77% of eyes in the PRK group and 88% in the LASIK group were within +/-0.50 diopter of emmetropia (P = .760). There was no statistically significant difference between groups in contrast sensitivity at 3, 6, 12, or 18 cycles per degree. The mean postoperative HOA root mean square was 0.45 +/- 0.13 mum in the PRK group and 0.59 +/- 0.22 mum in the LASIK group (P = .012), representing an increase factor of 1.22 and 1.74, respectively., Conclusions: Wavefront-guided PRK and wavefront-guided LASIK had similar efficacy, predictability, safety, and contrast sensitivity; however, wavefront-guided PRK induced statistically fewer HOAs than wavefront-guided LASIK at 6 months., Financial Disclosure: No author has a financial or proprietary interest in any material or method mentioned., (Copyright 2010 ASCRS and ESCRS. All rights reserved.)

We report the refractive correction of high myopia in a 23-year-old patient with idiopathic microspherophakia using iris-fixated phakic intraocular lenses (pIOLs) (Verisyse/Artisan). Four years after bilateral implantation, the uncorrected distance visual acuity was 20/25 with a correction of 20/20−1 in both eyes. No intraoperative or postoperative complications occurred. Iris-fixated pIOLs are not recommended for every patient with microspherophakia. However, this procedure may be an option in microspherophakic patients with appropriate anterior chamber depth and no history of lens dislocation who are likely to comply with annual eye examinations. Follow-up should include monitoring the endothelial cell count and biomicroscopy for adequate space between the pIOL, the natural crystalline lens, and the corneal endothelium. Scheimpflug photography can be a valuable tool in such cases. Financial Disclosure: No author has a financial or proprietary interest in any material or method mentioned. [Copyright &y& Elsevier]