Thanks in part to the wonders of modern medicine, people are living longer than every before. Living to a ripe old age does have its drawbacks, though.
Not only are 8% of men colorblind, but even compared to men who can distinguish between reds and greens, many women may live a more colorful existence. That’s because about 40% of women possess two types of so-called red cones, a key gene involved in enabling one to see the color red. Learn more on this Moment of Science.
Can insects see colors? As it turns out, it depends on what kind of eyes it has.
You know that dictionary game in which someone chooses an unusual word and everyone makes up a definition for it. Well, I’ve got a good word for you. Strabismus. Learn more on this Moment of Science.
Is squinting really that effective? Find out on this Moment of Science.
What is the autokinetic effect and how can you use it to fool your friends?
Is drinking yourself “blind” just an exaggeration, like “eating till you burst”? It’s unlikely that you’ll actually burst from a big dinner, or really go blind from a few drinks, but alcohol will in fact affect vision in two different ways.
Lack of pigment also makes eyes extremely sensitive to bright light. The pigment that determines whether your eyes are blue, brown, green, or gray normally helps to filter out stray light.