Stereotest LANG I-R

The 2021 released Stereotest LANG I-R is used for stereopsis screening without glasses. It comes with 3 objects from 400 to 1.200 arc seconds. In comparison to the previous version LANG 1, a few details have been improved: The sharpness of the objects and the homogeneity of the dot shape is higher, in order to further reduce the monocular recognizability. The objects and the compact format are identical. The CAR now has 400 arc seconds (vs. the 550'' with the LANG 1), making the steps between the objects more harmonized. The I-R comes in a light but stable white covering, including a two page manual. Weight: 54g.