Date: | c. 1947 |
Material: | Color lithography on cardstock, metal grommets |
Dimensions: | 7 × 3½ in. (179 × 89 mm) |
Company: | Dvorine |
Location: | Baltimore, Maryland, United States |
Invented by Israel Dvorine, who also invented a common test for color blindness. Animated Fusion cards were used to diagnose and treat strabismus (crossed-eyes) in children.