Which part of the eye refracts light and focuses it onto the retina?

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Multiple Choice

Which part of the eye refracts light and focuses it onto the retina?

Explanation:
Light is refracted primarily by the cornea, the transparent, curved front surface of the eye. Its curved shape and the air-to-eye boundary bend incoming rays much more than any other part, providing most of the eye’s focusing power so the image begins to form on the retina. The lens then adjusts this focus for objects at different distances through accommodation. The iris controls pupil size and light entry, not focusing, while the sclera is a protective outer coat. The retina is the light-sensitive layer where the image is ultimately detected.

Light is refracted primarily by the cornea, the transparent, curved front surface of the eye. Its curved shape and the air-to-eye boundary bend incoming rays much more than any other part, providing most of the eye’s focusing power so the image begins to form on the retina. The lens then adjusts this focus for objects at different distances through accommodation. The iris controls pupil size and light entry, not focusing, while the sclera is a protective outer coat. The retina is the light-sensitive layer where the image is ultimately detected.

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