Corneal Topography Six Years After Photorefractive Keratectomy for Myopia and Myopic Astigmatism (Articolo in rivista)

Type
Label
  • Corneal Topography Six Years After Photorefractive Keratectomy for Myopia and Myopic Astigmatism (Articolo in rivista) (literal)
Anno
  • 2009-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.9999/1081597X-20090422-08 (literal)
Alternative label
  • Serrao S,Lombardo G, Lombardo M, Palombi M, Roberts CJ (2009)
    Corneal Topography Six Years After Photorefractive Keratectomy for Myopia and Myopic Astigmatism
    in Journal of refractive surgery (1995)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Serrao S,Lombardo G, Lombardo M, Palombi M, Roberts CJ (literal)
Pagina inizio
  • 451 (literal)
Pagina fine
  • 458 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 25 (literal)
Rivista
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • IPCF UOS Cosenza Serraolaser, Rome, Italy Univ Calabria, Dept Phys, LiCryL Lab,, I-87036 Arcavacata Di Rende, CS Italy Vis Engn, Rome, Italy Vis Engn, Reggio Di Calabria, Italy St Johns Hosp, Dept Ophthalmol, Rome, Italy Ohio State Univ, Dept Ophthalmol, Columbus, OH 43210 USA Ohio State Univ, Dept Biomed Engn, Columbus, OH 43210 USA (literal)
Titolo
  • Corneal Topography Six Years After Photorefractive Keratectomy for Myopia and Myopic Astigmatism (literal)
Abstract
  • PURPOSE: To analyze the 6-year response of corneal topography to photorefractive keratectorny (PRK) for myopia and myopic astigmatism. METHODS: Twenty patients (40 eyes) who had PRK using the Technolas Keracor 217C excimer laser platform were followed up to 6 years after surgery. The eyes were subdivided into three groups according to the preoperative spherical equivalent refraction and astigmatism component. Corneal topographic maps were obtained with a Placido disk topographer (Keratron Scout). The pre- and postoperative topographical data were imported into custom software, which computed the average composite corneal map and average difference map for each study group to quantify the anterior corneal changes following laser ablation. The software defined three concentric zones of the surface topography, allowing characterization of the regional corneal response following surgery. RESULTS: At 6 years, no changes in the Surface topographic configuration of the central cornea were assessed following spherical myopic ablations in comparison with 1 year postoperatively, A slight peripheral flattening of approximately 0.60 diopters (D) (P<.001) was measured following the higher myopic ablations at 6 years compared with 1 year postoperatively. Minimal changes, of approximately 0.30 D (P<.001), in the anterior central cornea were observed following astigmatic correction during follow-up. CONCLUSIONS: Photorefractive keratectomy for the correction of myopia provides stable corneal topography, with no clinically significant changes in the curvature profile at 6 years after surgery. (literal)
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