title: [Intraocular lens (IOL) power calculation after keratorefractive procedures].
abstract: OBJECTIVE
  To compare various methods of estimating corneal power for IOL calculation for cataract surgery after corneal refractive surgery.
  
  
  METHODS
  Review of the medical literature and case reports.
  
  
  RESULTS
  For more accurate IOL power calculations we need pre- (Kpre) and post-treatment keratometry records (Kpost) if using 3rd generation formulae, or Kpost records when using 4th generation formulae.
  
  
  CONCLUSIONS
  Prior to performing a keratorefractive procedure it is advisable to have pre-treatment refraction and keratometry (K and method) registered. 3rd generation formulae with Aramberri's double-K correction, or 4th generation formulae are recommended.
authors.affiliation: Servicio de Oftalmología, Hospital Universitari Bellvitge, Barcelona, Spain. jcarlosmesa@mixmail.com
authors.forename: J C
authors.initials: JC
authors.lastname: Mesa
authors.forename: T
authors.initials: T
authors.lastname: Marti
authors.forename: J
authors.initials: J
authors.lastname: Arruga
mesh_terms: D002986:Clinical Trials as Topic; D006801:Humans; D054018:Lasers, Excimer; D007910:Lenses, Intraocular; D055095:Optics and Photonics; D018903:Photorefractive Keratectomy / Q000379:methods; D054140:Refractive Surgical Procedures