basic visual exercises for those people who wish to improve, widen and strengthen their own visual skills - contain of the kit: Red/Green google, a couple of Red/Green filters, flipper with +/-0.50 lenses, eye patch, transparent acetate+paper sheet with Stereopsi Rings, paper kit for Binocular Separator, a chart with small and big letters, paper sheet with Red/Green sketches, Visual Cube, pencil grip, booklet - specify if you need a different power of flipper lenses