title: Retreatment of undercorrected photorefractive keratectomy for myopia.
abstract: Fourteen eyes treated by photorefractive keratectomy (PRK) for myopia required retreatment because of undercorrection. The mean preoperative refraction of these eyes had been -9.82 D (range 5.25 to 17.13). No eyes before photorefractive keratectomy had low myopia, three eyes had myopia between -3.10 and -6.00 D, four were between -6.10 and -10.00 D, and seven had more than -10.00 D of myopia. Retreatment was required for manifest scars in association with regression, unresponsive to topical corticosteroids. The retreatments were performed using a Summit ExciMed UV200LA excimer laser with a dual ablation technique utilizing a phototherapeutic keratectomy followed by a photorefractive keratectomy. Follow-up ranged from 1 to 9 months. Eight eyes followed more than 3 months had a mean spherical equivalent refraction of -0.58 D (range -7.35 to +1.25).
authors.affiliation: Sydney Refractive Surgery Centre, St. Leonards, NSW, Australia.
authors.forename: M A
authors.initials: MA
authors.lastname: Lawless
authors.forename: P R
authors.initials: PR
authors.lastname: Cohen
authors.forename: C M
authors.initials: CM
authors.lastname: Rogers
mesh_terms: D003315:Cornea / Q000601:surgery*; D005500:Follow-Up Studies; D006801:Humans; D053685:Laser Therapy; D009216:Myopia / Q000503:physiopathology / Q000601:surgery*; D012029:Refraction, Ocular; D012086:Reoperation; D014792:Visual Acuity