vision defects by urvan & kester ria & vanessa hyperopiamyopia video

VISION DEFECTS

By Urvan & KesterRia & Vanessa

HYPEROPIA MYOPIA

VIDEO

http://www.youtube.com/watch?v=rktkvqdhoZQ

HYPEROPIA

Hyperopia, also known as farsightedness, longsightedness or hypermetropia, is a defect of vision caused by an imperfection in the eye (often when the eyeball is too short or the lens cannot become round enough), causing difficulty focusing on near objects, and in extreme cases causing a sufferer to be unable to focus on objects at any distance.

HOME

http://en.wikipedia.org/wiki/Defect

http://en.wikipedia.org/wiki/Visual_system

http://en.wikipedia.org/wiki/Eye

http://en.wikipedia.org/wiki/Lens_(anatomy)

http://en.wikipedia.org/wiki/Focusing

http://en.wikipedia.org/wiki/Distance

MYOPIAMyopia (Greek: μυωπία, muōpia, "nearsightedness"),[1] is a refractive defect of the eye in which collimated light produces image focus in front of the retina when accommodation is relaxed.Those with myopia see near objects clearly but far away objects appear blurred. With myopia, the eyeball is too long, or the cornea is too steep, so images are focused in the vitreous inside the eye rather than on the retina at the back of the eye. HOME

http://en.wikipedia.org/wiki/Greek_language

http://en.wikipedia.org/wiki/Refractive_error

http://en.wikipedia.org/wiki/Eye

http://en.wikipedia.org/wiki/Collimated_light

http://en.wikipedia.org/wiki/Focus_(optics)

http://en.wikipedia.org/wiki/Retina

http://en.wikipedia.org/wiki/Accommodation_(eye)

http://en.wikipedia.org/wiki/Visual_perception

http://en.wikipedia.org/wiki/Focus_(optics)

http://en.wikipedia.org/wiki/Cornea

http://en.wikipedia.org/wiki/Retina

vision defects by urvan & kester ria & vanessa hyperopiamyopia video

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