👉 Tetrachromic refers to a type of color vision defect that affects the ability of an individual's eyes to perceive multiple colors simultaneously. This condition is characterized by a lack of sensitivity to certain colors, including red, blue, green, and yellow, which are commonly used in tetrachromatography. In tetrachromation, each eye has three different receptors or cones that detect the presence of light. When there is more than one type of light (such as two or
