title: The effect of ocular dominance on the performance of professional baseball players.
abstract: OBJECTIVE
  The purpose of the study was to determine whether a performance difference exists between baseball players with "same" (right-right) and "crossed" (right-left) hand-ocular dominance.
  
  
  METHODS
  A cohort study design was used.
  
  
  METHODS
  Four hundred and ten major and minor league members of the Los Angeles Dodgers professional baseball team.
  
  
  METHODS
  Measurement of ocular dominance.
  
  
  METHODS
  Batting average and earned run average (ERA).
  
  
  RESULTS
  Same/crossed dominance (with P values in parentheses) are as follows: Batting averages: major league-0.271/0.251 (0.20); minor league-0.274/0.270 (0.57); ERA: major league-3.34/3.56 (0.66); minor league-4.00/4.20 (0.54).
  
  
  CONCLUSIONS
  Hand-ocular dominance patterns do not have an effect on batting average or ERA.
authors.affiliation: Jules Stein Eye Institute, University of California-Los Angeles, USA.
authors.forename: D M
authors.initials: DM
authors.lastname: Laby
authors.forename: D G
authors.initials: DG
authors.lastname: Kirschen
authors.forename: A L
authors.initials: AL
authors.lastname: Rosenbaum
authors.forename: M F
authors.initials: MF
authors.lastname: Mellman
mesh_terms: D001484:Baseball; D015331:Cohort Studies; D004292:Dominance, Cerebral / Q000502:physiology*; D007839:Functional Laterality / Q000502:physiology*; D006801:Humans; D008297:Male; D009799:Ocular Physiological Phenomena