Dictionary Meaning and Definition on 'Nearsightedness'
n : (ophthalmology) eyesight abnormality resulting from the
eye's faulty refractive ability; distant objects appear
blurred [syn: myopia, shortsightedness] [ant: hyperopia]
Wikipedia Meaning and Definition on 'Nearsightedness'
Myopia (Greek: μυωπία, muōpia, "nearsightedness" (Am. Eng.), "shortsightedness" (Brit. Eng.)) is a refractive defect of the eye in which collimated light produces image focus in front of the retina when accommodation is relaxed.
Eye care professionals most commonly correct myopia through the use of corrective lenses, such as glasses or contact lenses. It may also be corrected by refractive surgery, but this does have many risks and side effects. The corrective lenses have a negative optical power (i.e. are concave) which compensates for the excessive positive diopters of the myopic eye.
Myopia has been classified in various manners.
Borish and Duke-Elder classified myopia by cause:[See more about Nearsightedness at Dictionary 3.0 Encyclopedia]
Words and phrases related to 'Nearsightedness'
Nearsightedness Sample Sentences in News
- Some babies born very small do just fine as adults
By Kathryn Doyle NEW YORK (Reuters Health) - Although babies who are born weighing less than 3.3 pounds face challenges early on, by adulthood many report doing well, according to a new study. "It looks to us as if, despite many challenges early on and some functional issues, like myopia (nearsightedness), they do catch up," Dr. Brian A. Darlow said. Dar Read more on this news related to 'Nearsightedness'