Sight Testing and Refraction

Colour Vision and Stereo Tests | Lang Stereo Test No. 1

Lang Stereo Test No. 1

Lang stereo test No. 1

Lang Stereo Test No. 1

  • A simple test designed for stereopsis training in children based on two principles; random dots and cyclinder gratings.
  • When seen monocularly no discernible shape is seen, whereas in binocular vision stereoscopic shapes are recognised.
  • No spectacles are required which means that the patient's eyes can be observed.
  • Test No 1 consists of car, cat and star shapes.
  • Pocket sized