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Sonal Chauhan

The spectacles used for a person suffering from nearsightedness (myopia) are concave lenses. Concave lenses are thinner at the center and thicker at the edges, diverging light rays entering the eye. This helps move the focal point backward onto the ...

Sonal Chauhan

The spectacles used for a person suffering from farsightedness (hyperopia) have convex lenses. Convex lenses are thicker at the center and thinner at the edges, converging light rays entering the eye to focus correctly on the retina. This correction allows ...