This free website has been made possible thanks to a group of visually impaired programmers who worked hand in hand with ophthalmologists and orthoptists to develop it. If you would like to help, you can find more information here. All you have to do is buy one of the glasses suggested at the bottom, which are necessary for the games.
In lazy eye (amblyopia) there is one eye that sees less for fixation and reading. The eye that fixates well sees better than the other eye. That is why all the games on this page can be configured so that the good eye has figures with lower contrast in order to stimulate the lazy eye.
PC Orthoptics, on the other hand, allows binocular vision training for those who have poor convergence and therefore get tired of reading. And also in cases of amblyopia it helps to improve binocular vision by lowering the contrast of the good eye.
The other four games are for the lazy eye and work both binocularly and dichoptically, as they have both types of stimulus. Tetris also has different type of contrast in the stimulus.