This test, developed in close collaboration with TNO, has been the most accepted method since 1978 for determining depth perception in adults, but also in (very young) children. The 19th edition is now available. More than 9,000 ophthalmologists, orthoptists and optometrists have preceded you!

TNO Stereo Test – With 1 pair of Budget, Lightweight Red/Green Spectacles

Most accepted and reliable depth perception method.

See test depth through test plates with  red/green glasses.

Seven plates with test figures:

– 3 for screening
– 3 for diagnosis
– 1 for control.