The new and revised Lang I-R Stereo Test is an easy to use screening test designed for the early detection of problems with stereoscopic vision in children and adults without the need for dissociating glasses.
In comparison to the original version, the optical quality of the test cards of the new Lang I-R Stereo Test has been significantly improved, the sharpness of the motifs as well as the homogeneity of the dot pattern has been increased and the single-eye recognition reduced.
The test is suitable for children as young as 30 months by identifying pictures on a card at a testing distance of 30-40cm. It is simple, quick to use and fun for the child.
3D objects and disparities:
Cat 1200″
Star 600″
Car 400″
The car now has a disparity of 400”(compared to 550” in the original Lang I), making the gradation between the objects more harmonious.
