Hyperopia: (farsightedness) This is a defect of vision in which there is difficulty with near vision but far objects can be seen easily. The image is focused behind the retina rather than upon it. This occurs when the eyeball is too short or the refractive power of the lens is too weak. Hyperopia can be corrected by wearing glasses/contacts that contain convex lenses.
Credit:http://hyperphysics.phy-astr.gsu.edu/hbase/vision/eyedef.html and http://www.chm.bris.ac.uk/webprojects2002/upton/defects_of_the_eye.htm
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