The concave lens is used to correct an eye defect called as, ____.

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Detailed Solution

Concept: The concave lens is used to correct myopia.
Near-sightedness is also known as myopia. This is a typical sort of refractive error in which the person experiences a state in which objects near to them appear clear but objects further away appear hazy.
Myopia is caused by the eyeball becoming overly lengthy, causing problems with the cornea and lens focus. The thing from a distance appears hazy as a result of this. The light rays are focused at the front of the retina rather than directly on the surface, which causes this.
Myopia is corrected with a concave lens. The inwardly curved concave lens is put in front of the myopic eye.
Hence, the answer is myopia.

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