Psych M.D. - Lens


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Term: Lens
Definition (Myers):The transparent structure behind the pupil that changes shape to help focus images on the retina p.201 1
Definition (alternative): a piece of transparent substance, usually glass, having two opposite surfaces either both curved or one curved and one plane, used in an optical device in changing the convergence of light rays, as for magnification, or in correcting defects of vision. 2
Contextual explanation: The lens of our eyes are double convex, they focuses light that pass on to retina. Far-sighted people, the lens will cause that the focus is behind retina. For near-sighted people, the lens will cause so that focus is in front of retina.
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Psych M.D. - Lens - The Neuron4

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  1. Myers, D.G. (2004). Psychology. New York: New York:Worth Publishers.
  2. Accommodation Definition. Retrieved September 24, 2009, from Dictionary.com Web site: http://dictionary.reference.com/browse/lens
  3. IgniteLearning, (2006, Noember 2). Youtube-How Light Enters the Eye. Retrieved October 15, 2009, from Youtube Web site: http://www.youtube.com/watch?v=15P8q35vNHw&feature=related
  4. Cataract - Frequently Asked Questions. Retrieved October 15, 2009, from MaterTemplate Web site: http://www.hkeyesurgery.com/P7_FAQ1.html



Edited by: Youngmin
Date of last edit: 10/15/09



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