title: Nasopupillary asymmetry.
abstract: OBJECTIVE
  To establish the prevalence of nasopupillary asymmetry (difference in nasopupillary distances) in the population and its relation with the interpupillary distance.
  
  
  METHODS
  A retrospective descriptive study was conducted by reviewing of 1262 medical records. The values of nasopupillary asymmetry and the interpupillary distance were obtained. A statistical analysis was made and the correlation between these variables was established.
  
  
  RESULTS
  Seventy-nine percent of the population presented some degree of nasopupillary asymmetry. The interpupillary distance had a very low correlation with the nasopupillary asymmetry (r = 0.074, P = 0.0).
  
  
  CONCLUSIONS
  It is advisable to use the nasopupillary distance of each eye as a standard measurement.
authors.affiliation: Department of Ophthalmology, Colombia National University, Bogota, Colombia.
authors.forename: Eduardo
authors.initials: E
authors.lastname: Arenas
authors.affiliation: Department of Physiology, Colombia National University, Bogota, Colombia.
authors.forename: Diana
authors.initials: D
authors.lastname: Muñoz
authors.affiliation: Eduardo Arenas Ophthalmology Society, Bogota, Colombia.
authors.forename: Evelyn
authors.initials: E
authors.lastname: Matheus
authors.affiliation: Eduardo Arenas Ophthalmology Society, Bogota, Colombia.
authors.forename: Diana
authors.initials: D
authors.lastname: Morales
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D000886:Anthropometry; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D011680:Pupil