Lang Stereo Tests 2

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 visible.  Whereas in binocular vision stereoscopic shapes are recognised. No spectacles are required which means that the patient's eyes can be observed.

Test No 2 consists of elephant, van and moon with monocular star control.

Pocket sized.