Red-green color blindness is the most common type of color deficiency. Also known as deuteranopia, this is most likely a congenital condition, meaning that you’re born with it. If you have this type ...

Impaired vision and blindness are common. About 3.4 million people in the US are blind or visually impaired. Vision is usually measured by visual acuity charts, and normal vision is expressed as 20/20 ...

The basic mechanics of how we see color sounds simple enough—light hits an object and bounces into our eye. Then, our brain processes that information. But how we perceive color is much more ...