Abstract
The cornea has important functions such as protecting the structures within the globe, contributing to the refractive power of the eye, and focusing the light rays on the retina with minimum scattering. Although the neurobiological complexity of the retina and the dynamic movement of the lens are absent in the cornea, it is one of the most critical components of the perfect visual system, thanks to its transparency. In order to provide sustainable transparency in the cornea, which is very important for visual function, it is possible with the intense metabolic activity in the cornea and the perfect operation of the balanced ion liquid pump. The cornea provides excellent vision thanks to the structure and functions necessary for its unique function to continue regularly. This review focuses on cornea and tear film structure and physiology.
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