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 ...

Color blindness, or color vision deficiency, causes a person to see colors differently from most other people. There are several types of color blindness. Color vision deficiency or loss has multiple ...

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 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. This marks the first story ...

Abnormal color vision increases significantly with aging -— affecting one-half or more of people in the oldest age groups, reports a study. While few people younger than 70 have problems with color ...

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 ...

Color is the perception associated with the spectral composition of light. The question addressed here is what is the circuitry responsible for conscious color 'perception'. We are concerned with the ...

Color is more than a sensory pleasure; it is a tool refined by evolution. Our ability to perceive a broad spectrum of hues is a remarkable biological achievement shaped by survival pressures, social ...

Researchers at the Department of Psychiatry and Psychology, Center for Behavioral Health, Neurological Institute at the Cleveland Clinic in Ohio have authored a case report on the positive effects of ...

A quest to gain a more complete picture of color vision evolution has led scientists to an up-close, genetic encounter with one of the world's most rare and bizarre-looking primates. They have ...

The belief that dogs are colorblind, in the sense that they see the world only in black and white and shades of gray, is a common misconception. In a series of painstaking and extended measurements ...