(NEW YORK) -- New research shows that smartphones may be damaging people's eyesight.
The study found that smartphone-owners tend to read text messages or websites at a closer distance than they would with a newspaper. The trend could worsen the eyesight of people with glasses or contact lenses.
Over a hundred volunteers participated in the experiment, which asked patients to read from their smartphones. Scientists then measured the distance between their eyes and the screen.
Doctors advise smartphone owners to increase the font size on their devices, if they are worried about detrimental effects.
Copyright 2011 ABC News Radio