George O. Waring

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OBJECTIVE To determine the incidence and severity of complications from laser in situ keratomileusis (LASIK) for the correction of myopia by experienced and inexperienced surgeons. DESIGN Prospective, observational clinical study. PARTICIPANTS Fourteen surgeons and 1062 eyes of 574 myopic patients who desired surgical correction of myopia ranging from(More)
Laser myopic keratomileusis (photorefractive keratectomy) was performed on 29 rhesus monkey corneas with an argon fluoride (193-nm) excimer laser and a computer-controlled, moving slit delivery system. The 4-mm-diameter central ablation zone ranged in depth from 11 microns (-2 diopters effect) to 46 microns (-8 diopters effect). Corneas were studied for the(More)
We evaluated the topography of 399 normal corneas in 212 subjects with computer-assisted videokeratography. The mean subject age was 37 years (range, 8 to 79 years). Mean spherical equivalent refraction was -1.00 diopters (range, +5.50 to -8.37 diopters). A qualitative classification system for corneal topography was derived based on patterns seen on(More)
PURPOSE To evaluate the safety and efficacy of simultaneous Kamra corneal inlay implantation and laser in situ keratomileusis (LASIK) for the treatment of presbyopia in emmetropic, hyperopic, or myopic patients. SETTING Private center, Tokyo, Japan. DESIGN Cohort study. METHODS Patients had bilateral LASIK with simultaneous implantation of a corneal(More)
In general, endothelial dystrophies present three types of clinical manifestations: 1) production of collagenous tissue posterior to Descemet's membrane which appears as cornea guttata, polymorphic excrescences or gray sheets; 2) a disrupted endothelial mosaic in specular reflection; and 3) corneal edema as a reflection of decreased endothelial barrier and(More)
An argon fluoride excimer laser (193 nm) with a moving slit delivery system was used to perform anterior myopic keratomileusis in both eyes of 24 New Zealand white rabbits. Rabbits were killed immediately after ablation and at intervals up to 100 days. By slit-lamp microscopy, four rabbits at day 100 exhibited four clear corneas and four corneas had(More)
We analyzed 1,010 consecutive penetrating keratoplasties to determine the incidence of postoperative endophthalmitis, the frequency of positive donor rim cultures, and whether a correlation between these two factors exists. There were three cases of bacterial endophthalmitis, all caused by streptococci, and one case of Candida albicans endophthalmitis. In(More)
PURPOSE To evaluate corneal biomechanical deformation response using Ocular Response Analyzer (ORA) and Corvis ST data. DESIGN Prospective observational case-control study. METHODS A total of 1262 eyes of 795 patients were enrolled. Three groups were established, according to the corneal compensated intraocular pressure (IOPcc): Group I (10-13 mm Hg),(More)
Five rhesus monkey eyes underwent repeated argon fluoride (193 nm) excimer laser myopic photorefractive keratectomy 3 months following an initial ablation that had produced mild subepithelial haze. At 3 months all eyes had development of a dense subepithelial opacity and a thickened epithelium (12 cells, 80 microns) with vacuolization of basal cells,(More)
PURPOSE To compare the efficacy of a battery of routine and special histologic stains for the detection of acanthamoeba keratitis. DESIGN Observational study. METHODS Nine patients with culture-proven infectious keratitis whose clinical differential diagnosis included acanthamoeba and who had undergone penetrating keratoplasty were identified. Three(More)