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In the hypermetrope, the point of focus of rays of light is behind the retina - the eyeball is too short. Vision is better for far objects than for near ones. It can be corrected using a convex spectacle lens.
In young hypermetropes such focusing is usually done by accommodating the lens of the eye.
However, this leaves less reserve for near-vision so that tiredness may develop on reading books etc. Also, as the process of presbyopia occurs with increasing age, there may be a reduction in the point in near-range vision - usually at about the age of 45. This may manifest itself when the patient needs to hold textual material away from him in order to read it.
This problem can be overcome by the use of convex spectacle lenses for near work.