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Automated perimeter for binocular suppression.

R A Mest1, J P Ary, K W Wright

  • 1Department of Electrical Engineering, California State University, Long Beach 90840.

IEEE Transactions on Bio-Medical Engineering
|July 1, 1990
PubMed
Summary
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Suppression amblyopia can cause blind spots that worsen when both eyes are used. A new device and computer-controlled exam can automatically map these suppression scotomas during binocular viewing.

Area of Science:

  • Ophthalmology
  • Neuroscience
  • Vision Science

Background:

  • Scotomas, or blind spots, are often associated with suppression amblyopia.
  • These scotomas can paradoxically appear or expand when an individual attempts to use both eyes (binocular conditions).

Purpose of the Study:

  • To develop and validate a novel device for assessing binocular vision in amblyopia.
  • To automatically plot suppression scotomas under binocular conditions using a computer-controlled system.

Main Methods:

  • A specialized device was engineered to present independent LED stimulus arrays to each eye.
  • Beam splitters facilitated simultaneous binocular fixation on a shared background pattern.
  • A computer-controlled visual field screening examination was implemented for automated scotoma mapping.

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Main Results:

  • The system successfully presented independent stimuli to each eye during binocular viewing.
  • The computer-controlled examination automatically plotted suppression scotomas.
  • Demonstrated the feasibility of quantifying scotoma changes under binocular conditions.

Conclusions:

  • The developed device and examination method provide a novel approach to studying binocular function in amblyopia.
  • This technology allows for objective and automated measurement of suppression scotomas.
  • Facilitates further research into the mechanisms and treatment of amblyopia.