A color vision test, also known as the Ishihara color test, measures your ability to tell the difference among colors. If you don’t pass this test, you may have poor color vision, or your doctor may ...

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 ...

Currently, there is no cure available for color vision deficiency that is present from birth. However, supportive tools, such as glasses, contacts, and visual aids, can help people navigate color ...

This is an archived article and the information in the article may be outdated. Please look at the time stamp on the story to see when it was last updated. In this week’s ‘How It Works’ Jane Monzures ...

This story is part of a series on the current progression in Regenerative Medicine. This piece is part of a series dedicated to the eye and improvements in restoring vision. In 1999, I defined ...

What color is a tree, or the sky, or a sunset? At first glance, the answers seem obvious. But it turns out there is plenty of variation in how people see the world—both between individuals and between ...