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short sightedness

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short sightedness

Post by amar_sh143 on Tue Nov 20, 2012 9:25 pm

Short sightedness is also called myopia. It is the vision disorder due to which a person cannot see the object lying in the far place. This kind of defect is controlled by the use of the concave lens.
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Re: short sightedness

Post by amar_sh143 on Tue Nov 20, 2012 9:28 pm

heterometropia is the vision disorder due to which a person cannot see the object at near place. It is also called far sightedness. This is reduced by the use of convex lens.
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