specify and write lenses available in optical shop
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biconcave ,biconvex ,concavoconvex for myopia hypermetropia presbyopia respectively
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Explanation:
An optical shop has different varieties of lenses according to problem of eye the patient is suffering from. The myopic patient will use a concave lens whereas a patient suffering from hypermetropia utilize convex lens. Bifocal lens used by old people. Other lens are Plano convex lens, Double convex lens, Double concave lens and others.
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