Question

what is cornea?
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Answer 1

The cornea is the clear front surface of the eye. It lies directly in front of the iris and pupil, and it allows light to enter the eye.

Answer 2

The cornea is the transparent front part of the eye that covers the iris, pupil, and anterior chamber. The cornea, with the anterior chamber and lens, refracts light, with the cornea accounting for approximately two-thirds of the eye's total optical power. It is composed primarily of water and collagen. Collagen gives the cornea its strength, elasticity, and form.