title: Whole eye wavefront aberrations in Mexican male subjects.
abstract: OBJECTIVE
  To analyze the characteristics, incidence, and appearance of wavefront aberrations in undilated, normal, unoperated eyes.
  
  
  METHODS
  Eighty-eight eyes of 44 healthy male Mexican subjects (mean age 25.32 years, range 18 to 36 yr) were divided into three groups based on uncorrected visual acuity of greater than or equal to 20/20, 20/30, or 20/40. UCVA measurements were obtained using an Acuity Max computer screen chart. Wavefront aberrations were measured with the Nidek OPD-Scan ARK 10000, Ver. 1.11b. All measurements were carried out at the same center by the same technician during a single session, following manufacturer instructions. Background illumination was 3 Lux.
  
  
  RESULTS
  Wavefront aberration measurements for each group were statistically analyzed using StatView; an average eye was characterized and the resulting aberrations were simulated using MATLAB. We obtained wavefront aberration maps for the 20/20 undilated normal unoperated eyes for total, low, and high order aberration coefficients. Wavefront maps for right eyes were practically the same as those for left eyes. Higher aberrations did not contribute substantially to total wavefront analysis.
  
  
  CONCLUSIONS
  Average aberrations of this "normal eye" will be used as criteria to decide the necessity of wavefront-guided ablation in our facilities. We will focus on the nearly zero average of high order aberrations in this normal whole eye as a reference to be matched.
authors.affiliation: CVL, Laser Vision Correction, Puebla, Pue., Mexico. info@cvlaser.com
authors.forename: Roberto
authors.initials: R
authors.lastname: Cantú
authors.forename: Marco A
authors.initials: MA
authors.lastname: Rosales
authors.forename: Eduardo
authors.initials: E
authors.lastname: Tepichín
authors.forename: Andrée
authors.initials: A
authors.lastname: Curioca
authors.forename: Victor
authors.initials: V
authors.lastname: Montes
authors.forename: Julio
authors.initials: J
authors.lastname: Bonilla
mesh_terms: D000293:Adolescent; D000328:Adult; D003315:Cornea / Q000503:physiopathology; D019781:Corneal Topography; D006801:Humans; D015994:Incidence; D008297:Male; D008800:Mexico / Q000453:epidemiology; D012029:Refraction, Ocular; D012030:Refractive Errors / Q000175:diagnosis / Q000208:ethnology* / Q000503:physiopathology; D014792:Visual Acuity