The Ishihara Color Test is a widely used screening tool for color vision deficiency, especially red-green color blindness. It is striking how easily this difference can go unnoticed. A child learns ...

You may know someone who can’t tell the difference between specific colors — and there is a scientific reason it could be happening. The condition is known as color blindness. To share a better ...

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 ...

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 ...

Welcome to Up for Debate. Each week, Conor Friedersdorf rounds up timely conversations and solicits reader responses to one thought-provoking question. Later, he publishes some thoughtful replies.