Definition: A refractive error commonly known as nearsightedness. In myopia, the eyeball is too long in relation to its focusing power. This causes difficulty in seeing distant objects.
Also Known As: Nearsightedness
By Troy Bedinghaus, O.D., About.com
Updated: June 16, 2007
About.com Health's Disease and Condition content is reviewed by Kate Grossman, MD
©2008 About.com, a part of The New York Times Company.
All rights reserved.