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Visagraph

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Visagraph
[ve′zah-graf]
trademark for a device that records and measures eye movements while the patient is reading.

Visagraph [ve´zah-graf]
trademark for a device that records and measures eye movements while the patient is reading.


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The Visagraph goggles employ two infrared sensors for each eye that respond to changes in reflected light from the darker and lighter portions of the eye as ocular rotations are executed.
 
 
 
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