Vectographic Slides are used for many years to test for monocular acuity under binocular conditions, axis of astigmatism of each eye under binocular conditions, acuity & accommodative balance between the right and left eyes, binocular instability, parity between monocular & binocular acuity, muscle balance, fixation disparity and stereo acuity. Vectographic slides provide the ability to conduct a wide variety of tests for both children and adults including astigmatic tests, acuity tests, muscle balance tests and stereopsis tests.

Velcro adjustable apron consists of two velcro flaps, which aid in relieving weight off the shoulders. It's comfortable fit attained by varying the position of flaps.