Why Are You Nearsighted? Here's An Explanation You May Not Have Heard.

Nearsightedness is reaching epidemic levels worldwide, but nowhere is its rise more prevalent than East Asia, where as many as 90% of teenagers and young adults now suffer from blurry distance vision. Why the sudden spike? Book work has long been blamed, but recent findings point to something else. » 3/18/15 3:20pm 3/18/15 3:20pm