Myopia is a disease, not a refractive error. Here's what that means
Myopia is a refractive error (blurred vision at a given distance) that affects about 30% of the world's population. This ...
Should you be taking a vitamin A supplement? All the things the nutrient can — and can’t — do
Interest in vitamin A is booming as Americans seek alternative treatments for measles. While the essential nutrient has a ...