Roylco Color Vision Perception Kit
Contains 16 hidden image cards, made of colored dots. A person with normal vision will be able to see the shape in the dots. On the reverse, the shapes are hidden in "camouflage", or scribbles of another color. Lay one of the six included color filters on top to reveal the shape. Also includes eight color perception images, showing the difference between what person with normal vision sees and what a person with color blindness sees.