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Related Experiment Videos

Accommodative response to PRIO Computer Vision Tester versus printed text.

Richard E Sorkin1, Lewis N Reich, Joseph Pizzimenti

  • 1Nova Southeastern University, College of Optometry, Ft. Lauderdale, Florida, USA. rsorkin@yahoo.com

Optometry (St. Louis, Mo.)
|December 18, 2003
PubMed
Summary

The PRIO vision tester and printed text targets yield similar accommodative response measurements in prepresbyopic individuals. Further research is needed to assess the impact of luminance changes on PRIO vision tester accuracy.

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Area of Science:

  • Optometry
  • Ophthalmology
  • Vision Science

Background:

  • Video display terminals (VDTs) exhibit Gaussian display characteristics, influencing patient accommodation.
  • Previous research indicates varied accommodative responses to Gaussian images.

Purpose of the Study:

  • To compare the accommodative response to a Gaussian image (PRIO Computer Vision Tester) versus a printed text target (Monocular Estimation Method).

Main Methods:

  • Sixty normally sighted, prepresbyopic subjects were tested.
  • Low neutral retinoscopy was performed at 50 cm using both the PRIO vision tester and an MEM target.

Main Results:

  • The PRIO vision tester and MEM printed text target yielded comparable accommodative response measurements.

Related Experiment Videos

  • PRIO vision tester luminance decreased by approximately 40% within one hour of use.

    • Conclusions:

    • The PRIO vision tester and traditional nearpoint retinoscopy offer similar accommodative response measures in prepresbyopic individuals.
    • Further investigation is recommended to determine the effect of luminance fluctuations on PRIO system measurements.