With the help of this test you can find out if the brain of the person tested is able to put the two slightly different pictures produced by the eyes together to one image. This is only possible when both eyes fix on the same spot – in case they can not, due to a defective position, this will lead to exhausting attempts of compensation ending up in the loss of stereoscopic seeing.

The test proceeds like this: The person tested looks at the illuminated box with the cross through polarized glasses and describes the position of the vertical and horizontal bar of the cross. Depending on this description, the supervisor can draw conclusions about the ability of achieving binocular fusion.

This test is only a screening test. In case it reveals peculiarities, a further examination done by a qualified and well-equipped institution (optician) is highly recommended.

Product consists of:

- Luminous case with fixed cross
- Glasses with polarization filters
- Instruction Manual