Our ability to see with color vision depends on the presence and function of light-sensing pigments in the cones of our eyes. Color blindness, or color vision deficiency, happens when one or more of ...

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 ...

Using specialized filters, people with colorblindness may see more colors. — -- When 17-year-old Cole Williams was surprised by co-workers with the Christmas gift of Enchroma colorblindness ...

– Skepticism at School, Delayed Diagnoses and Feeling Excluded From Some Activities, Revealed in Landmark Survey of Color Blind Women – BERKELEY, Calif.--(BUSINESS WIRE)--Today, on International Color ...

The opponent process theory suggests that the way humans perceive colors is controlled by three opposing systems. We need four unique colors to characterize perception of color: blue, yellow, red, and ...

"The eyes are the window to the soul," notes a timeless quote. And while your eyes also bring the world your way, the origins of eye color are fascinating and even mysterious. To help lay out the ...