For most of our evolutionary history, human activity has been linked to daylight. Technology has liberated us from these ...

People with green or hazel eyes have light brown pigment in their eyes. As babies are exposed to sunlight, those specialized cells—the melanocytes—become more active, producing more melanin ...

People with lighter eye colors—particularly blue eyes—tend to exhibit higher alcohol tolerance. This increased tolerance stems from differences in how their bodies metabolize alcohol, ...

And polarized or anti-reflective coatings also filter light to reduce glare and eye strain. The evidence is mixed as to how dangerous it is for your eyes, but it can also affect your sleep for the ...

Blue light is a high-energy light that the eyes absorb from computers, smartphones, LED lights, and fluorescent lights. The sun is the biggest source of blue light. On a sunny day, it's 100,000 ...

Imagine if a simple beam of light could one day treat conditions like nearsightedness or age-related macular degeneration (AMD). Researchers at the University of Nevada, Reno School of Medicine (UNR ...

Most prehistoric Europeans had dark skin, hair and eyes well into the Iron Age, about 3,000 years ago, new research finds. Scientists found that the genes that cause lighter skin, hair and eyes ...