title: Optical Profile Following High Hyperopia Correction With a 500-Hz Excimer Laser System.
abstract: OBJECTIVE
  To evaluate corneal higher order aberrations after LASIK for the correction of high hyperopia using a 500-Hz excimer laser and optimized ablation profile.
  
  
  METHODS
  Retrospective consecutive study including 51 eyes of 28 patients (age range: 21 to 54 years) with high hyperopia or hyperopic astigmatism (sphere ≥ 5.00 diopters). All cases underwent LASIK using the sixth generation Amaris excimer laser (SCHWIND eye-tech-solutions, Kleinostheim, Germany) and a femtosecond laser platform for flap creation. Postoperative changes in corneal higher order aberrations for the 4-, 5-, and 6-mm pupil diameters and corneal asphericity for 4.5 and 8 mm were represented at the end of the 6-month follow-up.
  
  
  RESULTS
  A significant increase in corneal root mean square higher order, spherical, and coma aberrations was observed 6 months after surgery (P < .01). Corneal asphericity for the 4.5-mm (Q45) and 8-mm (Q8) corneal diameter also changed significantly during the postoperative period (P < .01). Strehl ratio change was not statistically significant (P = .77).
  
  
  CONCLUSIONS
  Correction of high hyperopia with LASIK significantly induces corneal higher order aberrations regardless of the physiologic level of photopic and mesopic pupil conditions.
authors.forename: Ana B
authors.initials: AB
authors.lastname: Plaza-Puche
authors.forename: Amr
authors.initials: A
authors.lastname: El Aswad
authors.forename: Samuel
authors.initials: S
authors.lastname: Arba-Mosquera
authors.forename: Dominika
authors.initials: D
authors.lastname: Wróbel-Dudzinska
authors.forename: Ahmed A
authors.initials: AA
authors.lastname: Abdou
authors.forename: Jorge L
authors.initials: JL
authors.lastname: Alió
mesh_terms: D000328:Adult; D003315:Cornea / Q000503:physiopathology; D063171:Corneal Pachymetry; D019781:Corneal Topography; D057108:Corneal Wavefront Aberration / Q000209:etiology* / Q000503:physiopathology; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D006956:Hyperopia / Q000503:physiopathology / Q000601:surgery*; D020731:Keratomileusis, Laser In Situ / Q000379:methods*; D054018:Lasers, Excimer / Q000627:therapeutic use*; D008297:Male; D008875:Middle Aged; D011183:Postoperative Complications; D012029:Refraction, Ocular / Q000502:physiology; D012086:Reoperation; D012189:Retrospective Studies; D014792:Visual Acuity / Q000502:physiology; D055815:Young Adult