title: Binocular visual performance after LASIK.
abstract: OBJECTIVE
  To analyze binocular visual function after LASIK.
  
  
  METHODS
  Eye aberrometry and corneal topography was obtained for both eyes in 68 patients (136 eyes). To evaluate visual performance, monocular and binocular contrast sensitivity function and disturbance index for quantifying halos were measured. Tests were performed under mesopic conditions.
  
  
  RESULTS
  Binocular summation and disturbance index diminished significantly (P<.0001) after LASIK with increasing interocular differences in corneal and eye aberrations. Binocular visual deterioration was greater than monocular deterioration for contrast sensitivity function and disturbance index.
  
  
  CONCLUSIONS
  Binocular function deteriorates more than monocular function after LASIK. This deterioration increases as the interocular differences in aberrations and corneal shape increase. Improvements in ablation algorithms should minimize these interocular differences.
authors.affiliation: Laboratorio de Ciencias de la Visión y Aplicaciones, Departamento de Optica, Facultad de Ciencias, Universidad de Granada, Granada, Spain. jrjimene@ugr.es
authors.forename: José Ramón
authors.initials: JR
authors.lastname: Jiménez
authors.forename: Cesar
authors.initials: C
authors.lastname: Villa
authors.forename: Rosario González
authors.initials: RG
authors.lastname: Anera
authors.forename: Ramón
authors.initials: R
authors.lastname: Gutiérrez
authors.forename: Luis Jiménez
authors.initials: LJ
authors.lastname: del Barco
mesh_terms: D000328:Adult; D015350:Contrast Sensitivity / Q000502:physiology; D003315:Cornea / Q000503:physiopathology* / Q000601:surgery; D019781:Corneal Topography; D003623:Dark Adaptation; D006801:Humans; D020731:Keratomileusis, Laser In Situ; D009216:Myopia / Q000503:physiopathology / Q000601:surgery; D011184:Postoperative Period; D015348:Vision, Binocular / Q000502:physiology*