$A$ person suffering from an eye defect uses lenses of power $-1\, D$. Name the defect he is suffering from and the nature of lens used.
(N/A) The power of the lens is negative $(-1\, D)$,which indicates that the lens is a concave lens.
Concave lenses are used to correct myopia (nearsightedness).
Therefore,the person is suffering from myopia and is using a concave lens.
Concave lenses are used to correct myopia (nearsightedness).
Therefore,the person is suffering from myopia and is using a concave lens.
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