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 ...

The most common types of color blindness, or color vision deficiency, are genetic. However, other types may develop due to injuries, eye diseases, health problems, and side effects of treatment.

Being able to see colours is a blessing. However, not everyone has the luxury. Not that people with colour blindness, also known as colour vision deficiency, literally see black and white, but they ...

Dr. Mark Lindsay was 5 years old when he first learned that tree trunks were brown. "Up until that point, I believed leaves and trunks were all green. Just lighter and darker shades," Mark said. Mark ...

Scientists cannot say for certain, but new research suggests that different people’s brains respond similarly when looking at a particular hue. By Kenneth Chang After decades of brain research, ...

What is low vision? This vague-sounding condition, which is sometimes called vision loss or visual impairment, is a permanent, life-changing diagnosis. It’s not the same as blindness — which occurs ...

Bold hues of red, orange, yellow, blue and purple help plants and animals communicate with their own species and others in their efforts to survive. Vivid orange dart frogs warn predators of their ...