title: [Visual outcome in keratoconus patients 1 and 2 years after penetrating keratoplasty].
abstract: OBJECTIVE
  To quantify the visual outcome obtained in patients operated on for penetrating keratoplasty for keratoconus (KC) after 1 and 2 years.
  
  
  METHODS
  and methods: The files from consecutive keratoconus patients operated on for PKP after more than 2 years of follow-up were retrospectively studied. The demographic charts, the KC stage, and the surgical features were noted. The best corrected visual acuities (BSCVA) were analyzed at the initial examination and after 1 and 2 years of follow-up.
  
  
  RESULTS
  One hundred and two eyes from 98 patients were analyzed, including 83 grade 4 (81%) and 19 grade 3 (18%) cases of KC. The mean preoperative BSCVA was 0.08 on the decimal chart, which increased to 0.5 and 0.6 1 and 2 years after penetrating keratoplasty (p<0.001, respectively). The mean keratometric astigmatism was 3.80+/-2.9 D and 3.94+/-2.3 D for the grade 3 and 4 KC, respectively, after 1 year and 2.52+/-1.9 D and 3.34+/-2.2 D after 2 years (NS). At this time point, 81% of the eyes had less than 5 D astigmatism.
  
  
  CONCLUSIONS
  One and 2 years after penetrating keratoplasty, a mean BSCVA of 0.5 and 0.6 could reasonably be expected in keratoconus patients and three-quarters of patients can be expected to see better than 0.5 after 2 years.
authors.affiliation: Service d'Ophtalmologie, Hôpital Hôtel-Dieu, Assistance Publique-Hôpitaux de Paris, Paris.
authors.forename: H
authors.initials: H
authors.lastname: Sagnières
authors.forename: M
authors.initials: M
authors.lastname: Doat
authors.forename: A
authors.initials: A
authors.lastname: Girard
authors.forename: J-M
authors.initials: JM
authors.lastname: Legeais
authors.forename: G
authors.initials: G
authors.lastname: Renard
authors.forename: J L
authors.initials: JL
authors.lastname: Bourges
mesh_terms: D001251:Astigmatism / Q000453:epidemiology / Q000517:prevention & control; D005500:Follow-Up Studies; D006801:Humans; D007640:Keratoconus / Q000601:surgery*; D015948:Keratoplasty, Penetrating; D012189:Retrospective Studies; D013997:Time Factors; D016896:Treatment Outcome; D014792:Visual Acuity