An Experience-dependent Aspect of Human Visual Acuity

  • R. D. Freeman
Part of the NATO Advanced Study Institutes Series book series (NSSA, volume 27)


Visual acuity tests were conducted using letters arranged in horizontal or vertical arrays. A significantly higher error rate was found for column arrangements. This effect was not evident when acuities were determined for Landolt ring targets or, with another group of subjects, for Chinese characters. Furthermore, children who knew the alphabet but did not yet read showed no effect. These results are consistent with the notion that visual experience may influence the development of visual resolution.


Visual Acuity Chinese Character Reading Speed Vertical Array Reading Habit 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


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Copyright information

© Plenum Press, New York 1979

Authors and Affiliations

  • R. D. Freeman
    • 1
  1. 1.School of OptometryUniversity of CaliforniaBerkeleyUSA

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