The cornea is a fibrous layer of clear tissue that covers the anterior part of the eye and is continuous with the white of the eye.
What is the cornea?
The iris, pupil, and anterior chamber are all protected by the cornea, which is the transparent front portion of the eye. The cornea, along with the anterior chamber and lens, refracts light, making up around two-thirds of the eye's total optical power. The cornea has a refractive power of about 43 dioptres in humans. Surgical techniques like LASIK can alter the cornea. The cornea provides the majority of the eye's focusing ability, although the focus is fixed. By altering the geometry of the lens, accommodation of the focus of light to improve the vision of close objects can be achieved.
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