Why does refraction takes place in the eye?

Refraction in the eye occurs primarily due to the bending of light as it passes through different transparent media, such as the cornea, aqueous humor, lens, and vitreous humor. The cornea provides most of the eye's optical power, while the lens fine-tunes focus for near or distant objects. This bending of light is essential for forming clear images on the retina, enabling us to see. Any irregularities in the shape of the eye or lens can lead to refractive errors, affecting vision clarity.