Wesson Fixation Disparity Card

Measurements include horizontal and vertical Fixation disparity, associated phoria, and forced vergence Fixation disparity curves used for Fixation typing and the effects of visual therapy. In addition, accommodative lag may be measured with high frequency and very low-frequency targets.

Kit includes a Fixation disparity card, New Age Polarized, instructions, and a pad of 25 sheets of the vergence graph and storage box.