how do the lenses used in spectacles correct defects of vision
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Contact lenses and eyeglasses correct nearsightedness by diverging light rays, which reduces the eye's focusing power. This moves the eye's focus point backward, onto the retina where it belongs. Contact lenses and glasses correct farsightedness by converging light rays, which increases the eye's focusing power.
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Contact lenses and eyeglasses correct nearsightedness by diverging light rays, which reduces the eye's focusing power. This moves the eye's focus point backward, onto the retina where it belongs. ... Contact lenses and glasses correct farsightedness by converging light rays, which increases the eye's focusing power.
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