Have you ever been watching TV or reading a book and all of a sudden had blurry vision in one eye? Maybe you closed one eye ...

Here’s what to know. Why does looking at screens cause blurry vision? There are two main reasons, says Amy Watts, director of vision rehabilitation at Massachusetts Eye and Ear hospital.

Medically reviewed by Christine L. Larsen, MD Nearsighted means you have trouble seeing things that are far away from you, ...