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The cornea is a clear membrane made of collagen that covers the front of your eye. It protects the inside of the eye and focuses light that passed through it into the eye. If the cornea gets scratched, it can cause a corneal abrasion, and if it gets infected by a virus or bacteria, it can cause keratitis.
These 10 animal facts will amaze you. The cornea is the transparent portion of the eye which allows light to enter and performs two-thirds of the focusing tasks. This part also covers both the iris, the colored portion of the external eye, and the pupil, the reactive light meter in front of the lens.hese 10 animal facts will amaze you. The cornea is the transparent portion of the eye which allows light to enter and performs two-thirds of the focusing tasks. This part also covers both the iris, the colored portion of the external eye, and the pupil, the reactive light meter in front of the lens.