title: 20/20--how close must we get?
authors.forename: T P
authors.initials: TP
authors.lastname: Werblin
mesh_terms: D005500:Follow-Up Studies; D006801:Humans; D007646:Keratotomy, Radial / Q000379:methods*; D012029:Refraction, Ocular; D012030:Refractive Errors / Q000503:physiopathology; D054140:Refractive Surgical Procedures; D016896:Treatment Outcome; D014792:Visual Acuity