Skip to main content
Select Source:

long-sightedness

long-sightedness (hyperopia) Defect of vision that causes distant objects to be seen more clearly than nearby ones. In a long-sighted person, the focusing distance of the eyeball is too short and, as a result, light rays entering the eye strike the retina before they can be properly focused. Long-sightedness is corrected by convex lenses. See also myopia

Cite this article
Pick a style below, and copy the text for your bibliography.

  • MLA
  • Chicago
  • APA

"long-sightedness." World Encyclopedia. . Encyclopedia.com. 16 Dec. 2017 <http://www.encyclopedia.com>.

"long-sightedness." World Encyclopedia. . Encyclopedia.com. (December 16, 2017). http://www.encyclopedia.com/environment/encyclopedias-almanacs-transcripts-and-maps/long-sightedness

"long-sightedness." World Encyclopedia. . Retrieved December 16, 2017 from Encyclopedia.com: http://www.encyclopedia.com/environment/encyclopedias-almanacs-transcripts-and-maps/long-sightedness

long-sightedness

long-sightedness (long-syt-id-nis) n. see hypermetropia.

Cite this article
Pick a style below, and copy the text for your bibliography.

  • MLA
  • Chicago
  • APA

"long-sightedness." A Dictionary of Nursing. . Encyclopedia.com. 16 Dec. 2017 <http://www.encyclopedia.com>.

"long-sightedness." A Dictionary of Nursing. . Encyclopedia.com. (December 16, 2017). http://www.encyclopedia.com/caregiving/dictionaries-thesauruses-pictures-and-press-releases/long-sightedness

"long-sightedness." A Dictionary of Nursing. . Retrieved December 16, 2017 from Encyclopedia.com: http://www.encyclopedia.com/caregiving/dictionaries-thesauruses-pictures-and-press-releases/long-sightedness

long-sightedness

long-sightedness See hypermetropia.

Cite this article
Pick a style below, and copy the text for your bibliography.

  • MLA
  • Chicago
  • APA

"long-sightedness." A Dictionary of Biology. . Encyclopedia.com. 16 Dec. 2017 <http://www.encyclopedia.com>.

"long-sightedness." A Dictionary of Biology. . Encyclopedia.com. (December 16, 2017). http://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/long-sightedness

"long-sightedness." A Dictionary of Biology. . Retrieved December 16, 2017 from Encyclopedia.com: http://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/long-sightedness