Figure 3: A: Example of a display when the images presented to the two eyes on the monitor are fused. The display rocks back and forth along the vertical axis shown by the vertical lines as also depicted in Figure 1. B: The device used for the thread the needle test. The diameters of the loops range between 0.8 and 6.3 millimeters. The test is carried out under both binocular and monocular viewing conditions. C: The rod insertion task in which the rods with the plastic tops have to be inserted into each of the 25 tubes successively. The task was performed four times, twice under binocular and twice under monocular conditions. For each repetition the unit containing the tubes was rotated 90 degrees. D: The device used for the touch panel test. Subjects were asked to place their head into the head holder on the right. Upon pressing the touch panel where the red square is located, a small black spot appeared briefly at one location on the panel. The task was to reach out and touch the dot. Thirty-six dots were shown in succession tested twice under both binocular and under monocular viewing conditions. In addition to obtaining time of completion data, this test allowed us to generate accuracy scores based on the difference between the location of each dot and where the subject touched the screen.