Psych M.D. – Farsightedness


A B C D E F G H I J K L M N O P Q R S T U V W X Y Z


Term: Farsightedness
Definition (Myers): a condition in which faraway objects are seen more clearly than near objects because the image of near objects is focused behind the retina.
Definition (alternative):
Hyperopia, also known as far-sightedness, long-sightedness or hypermetropia, is a defect of vision caused by an imperfection in the eye (often when the eyeball is too short or when 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. link
Contextual explanation:
This is the opposite of nearsightedness. The light rays from nearby objects reach the retina before they have produced a focused image, therefore causing them to be blurry. People only mildly farsighted do not discover their condition until they reach their middle age.
Related terms and concepts:
lens
nearsightedness
retina
acuity

Psych M.D. – Farsightedness - The Neuron
http://www.siemslasik.com/lasik-surgery/images/refractive_errors/large/farsightedness.jpg
Related websites:
http://en.wikipedia.org/wiki/Hyperopia
http://www.mayoclinic.com/health/farsightedness/DS00527
http://www.allaboutvision.com/conditions/hyperopia.htm
http://www.stlukeseye.com/conditions/Hyperopia.asp
Edited by: Joon



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