Black BackGround Tranaglyph
These offer excellent cancellation with no ghost images. These fixed demand targets provide flat fusion from 1-3 prism diopters, 2nd & 3rd degree fusion from 4-28 PD. BI & BO therapy is possible using a R/G flipper or switching the lenses in the goggles.
(Set of 5 cards and one R/G Flipper)