title: [Ipsilateral rotational autokeratoplasty with 0.5 mm resection of inferior corneal crescent, in keratoconus].
abstract: OBJECTIVE
  To report the visual outcomes in keratoconus after ipsilateral rotating penetrating autokeratoplasty technique (IRPAK) associated with resection of 0.5 mm of inferior corneal crescent.
  
  
  METHODS
  According to a prospective, longitudinal, series of cases, the authors analyzed visual results of six patients with keratoconus, who underwent an IRPAK, by two trepanations superiorly coincident and with a difference of 0.5 mm inferiorly. After resection of this corneal crescent, a 180 masculine rotation of the corneal disc was performed, which was fixed with 24 sutures diametrically opposed. The patients were followed-up for a mean period of 12.6 months.
  
  
  RESULTS
  Comparing the data of first postoperative year to those of the preoperative, there were significant improvements in the medians of: far visual acuity (p=0.04) and maximum keratometric value (p=0.04). For the refractive spherical equivalent (p=0.25) and topographic astigmatism (p=0.67), the improvement was not significant.
  
  
  CONCLUSIONS
  IRPAK associated with resection of 0.5 mm of inferior corneal crescent, after the first postoperative year, was effective in improving visual acuity and topographic maximum keratometric value. This technique has the advantages of eliminating the difficulties of obtaining donor corneal tissue and to avoid graft rejection.
authors.affiliation: Departamento de Cúrnea e Doenças Externas, Fundação Altino Ventura, Recife, PE, Brasil. fernandojmcunha@uol.com.br
authors.forename: Fernando José Melo da
authors.initials: FJ
authors.lastname: Cunha
authors.forename: Márcia Trovão Duarte
authors.initials: MT
authors.lastname: Cavalcanti
authors.forename: Ana Cecília de Souza Leão
authors.initials: AC
authors.lastname: Escarião
authors.forename: Tatiana Azevedo
authors.initials: TA
authors.lastname: Arraes
authors.forename: Wagner
authors.initials: W
authors.lastname: Lira
authors.forename: Ronald
authors.initials: R
authors.lastname: Cavalcanti
mesh_terms: D003315:Cornea / Q000601:surgery*; D005500:Follow-Up Studies; D006801:Humans; D007640:Keratoconus / Q000503:physiopathology / Q000601:surgery*; D015948:Keratoplasty, Penetrating / Q000379:methods*; D011184:Postoperative Period; D011446:Prospective Studies; D012030:Refractive Errors / Q000503:physiopathology; D016896:Treatment Outcome; D014792:Visual Acuity / Q000502:physiology