A large U.S. health records study suggests that difficulty seeing blood in urine may put color-blind patients at higher risk.

Several underlying conditions can contribute to poor vision in low-light settings, commonly associated with nyctalopia or night blindness. Some of the frequent night blindness causes are ...

Color blindness, or color vision deficiency, is more common in males. This is due to how parents pass down a chromosome associated with the male sex. Red-green color vision deficiency is the most ...

Deuteranopia is a type of color blindness that affects shades of green. A person may be unable to see greens or distinguish between green and other colors. Color vision deficiencies, also called color ...

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 ...

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 ...

DR. JEFFRIES’ treatise 1 deals with a subject which is interesting mainly from a technical point of view, most immediately concerning members of the medical profession and the administrators of ...

Are you one of the 300 million people affected by color blindness? Take this simple, doctor-approved test to determine your color vision deficiency and learn more about the condition.