Color blindness, or color vision deficiency, affects the way you perceive color and can make it hard to distinguish between certain colors. People typically have three types of cones (M, L, and S ...

There are various other tests to detect color vision like D-15 test, lantern test and holmgreen wool test. Published on Apr 16, 2013 Last Updated on Apr 19, 2013 ...

Most nonverbal cues are visual, such as hand gestures or body posture (Burgoon et al., 2022). People who are blind or have low vision are unable to perceive most or all visual nonverbal cues.

Color blindness in females is much less common than in males. Specific genetic mutations can cause it, and these mutations vary depending on the chromosomes present. Learn more.

Researchers have identified 107 genes that increase a person’s risk of developing the eye disease glaucoma, and now developed a genetic test to detect those at risk of going blind from it. The ...