Myopia is the medical term for nearsightedness, a very common vision defect. In myopia, light rays of images focus in front of the retina rather than directly on the retina. Myopia often runs in families and tends to develop in childhood.
People who have myopia or nearsightedness have difficulty seeing distant objects clearly but can see objects that are nearby. When myopia is not corrected with glasses or contact lenses, symptoms include blurred vision, distorted vision, eye strain or fatigue when looking at distant objects (such as while driving), headache, or squinting.
Causes of myopia (nearsightedness)
The cause of myopia is a refractive error in which the eyeball is too long or the cornea has too much curvature, so the light entering the eye does not focus correctly.
Other myopia (nearsightedness) symptoms and signs
Main Article on Myopia (Nearsightedness) Symptoms and Signs

SLIDESHOW
Pink Eye (Conjunctivitis) Symptoms, Causes, Treatments See SlideshowPictures, Images, Illustrations & Quizzes
-
Eye Health: What Your Eye Symptoms May Mean
Will your eye condition clear up, or is it a warning sign of a critical eye health issue? Learn about common eye symptoms, what...
-
Eye Problems & Conditions Quiz
What do you know about your eyes? Take this quick quiz to learn about a range of eye diseases and conditions.
-
Eyeglasses and Frames: Glasses for Presbyopia, Sunglasses, Eye Problems
Learn about your eye care needs and fashion wishes -- with eye glasses, frames and eyewear for computer use, reading, driving,...
-
LASIK Eye Surgery: Better Vision with Laser Surgery
How does LASIK work? Get information on this popular laser eye surgery, the procedure, success rates, and possible vision side...
-
Picture of Eye
The eye has a number of components which include but are not limited to the cornea, iris, pupil, lens, retina, macula, optic...
-
Picture of Eye Anatomy Detail
The eye has a number of components which include but are not limited to the cornea, iris, pupil, lens, retina, macula, optic...
-
Picture of Nearsightedness
Nearsightedness affects 20%-30% of the population, but this eye disorder is easily corrected with eyeglasses, contact lenses or...
-
Recognize These Common Eye Problems
Eye diseases can cause damage and blindness if not treated soon enough. Learn the warning signs and symptoms of common eye...
From 
Eye Health Resources
Featured Centers
Health Solutions From Our Sponsors
Subscribe to MedicineNet's General Health Newsletter
By clicking Submit, I agree to the MedicineNet's Terms & Conditions & Privacy Policy and understand that I may opt out of MedicineNet's subscriptions at any time.