How do corrective lenses, such as glasses and contact lenses, improve vision?

Ans: Corrective lenses, like glasses and contact lenses, enhance vision by altering the way light enters the eye. In cases of nearsightedness (myopia), the lenses are concave, which helps diverge incoming light, allowing it to focus accurately on the retina. For farsightedness (hypermetropia), the lenses are convex, converging light to reach the retina effectively.

These lenses compensate for refractive errors, enabling the eye to form a clear image on the retina. Additionally, they can correct astigmatism by adjusting for irregular corneal shape. Ultimately, corrective lenses ensure that light rays converge appropriately on the retina, resulting in improved and sharper vision.

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