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
- Tucson, AZ | Continuous News and Weather
TUCSON- A troubling trend happening around the world and here in Tucson. Kids between the ages of 5 and 15 are showing symptoms of nearsightedness sooner than ever before. Read more on this news related to 'Nearsightedness'
- Mobile device use causing nearsightedness in children
Doctors think increased use of mobile devices by children is causing a growing number of cases of nearsightedness. Read more on this news related to 'Nearsightedness'
- Tablets, Smartphones May Not Be Totally To Blame For Nearsighted Kids
Experts recommend a 15-minute vison break every couple of hours of up-close work to lessen the chances of developing nearsightedness. And if all else fails, there's always glasses. Read more on this news related to 'Nearsightedness'