Add Yahoo as a preferred source to see more of our stories on Google. for those whose careers involve staring at computer screens all day, eye strain is a leading side effect of this practice.

An estimated 104 million Americans of working age spend more than seven hours a day in front of screens, according to the American Optometric Association. Listen to this NEW YORK — The trouble started ...

NEW YORK (AP) — The trouble started every day at around 3 p.m., after Cathy Higgins had spent five or six hours staring at an array of computer screens at her desk. Her university job overseeing ...