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Wesson Fixation Disparity Card
Product Description
The Wesson Fixation Disparity Card: The Wesson Fixation Disparity Card© is used to measure Fixation Disparity or Accommodative Lag. Yields clinically accurate estimates of key parameters involved in measurements of these functions. Testing is quick and extensive use has shown the results to be reliable over time. Measures both horizontal and vertical disparity. With prisms, the Card can also be used to measure a forced vergence fixation disparity curve. Can be used for adults and pre-reader children. Measures Accommodative Lag using either the MEM method, the Nott method or the DOG method. Provides a Gaussians Waveform required for the DOG method. Includes Polarized Glasses. Card is punched for Phoropter mounting.
For use at 40 or 25 CM.
| Weight | 0.5 kg |
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