Evans Distance Fixation Disparity Unit
- The Distance Fixation. Disparity Unit enables the compensation (or otherwise) of heterophoria to be established between 2 and 6 metres.
- The precise prism or adjustment in sphere necessary to produce compensation is easily obtained. It is also possible to investigate motor and sensory ocular dominance and, when used at 1.5m, the presence of suppression or harmonious ARC in strabismus.
code 657
