Stereotest Random Dot 3-S with symbols for children

The stereotest Random Dot 3-S enables you to test extra fine depth perception. The expanded Random Dot Shapes for gross disparity test for 900, 650, 500 and 400 arc sec). The 3 circle tests are made for critical testing from 160 to 12,5 arc sec. And the other Random Dot Shapes are for testing children at 400, 200 and 100 arc sec. Comes with 1 pair of polarized goggles for adults, and 1 for children. Results on backside of booklet. Comes with manual.