cornea does not have any blood vessels

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The cornea has no blood vessels. The cornea is nothing but a vital and transparent part of the eye that provides us most of our optical power and ability to focus, as there are no blood vessels the cornea receives nourishment from the tears and aqueous humor (a fluid in the anterior portion of the eye) that fills the chamber behind it. and it gets its oxygen directly from the air. the cornea is the fastest healing tissue of the human body, which can heal most of the problems within 24-36 hours.

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