Convergence Training Card A

Description Of Item: Test designed to train fusional convergence. Single card with large red and green stereo targets on the front side and 8 smaller targets of increasing disparity on the reverse side. The targets are viewed through red-green goggles with the red goggle in front of the right eye. As the disparity between the targets increases, the eyes must converge more to align the small central red and green crosses and to observe the stereo effect. COPYRIGHT DWYER 1986 printed on both sides. 297 x 210 mm