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The outermost layer of you eye is called the cornea. This dome-shaped, clear surface protects the front of your eye. The cornea controls the light that enters your eye, as well as helps your eye to focus. The cornea is made up of five layers, all of which play an important role in its function. The cornea, unlike other tissues in the body, does not have blood vessels to help prevent infection and nourish it. The cornea obtains nourishment from tears and other fluids kept in the chamber behind your eye. The cornea plays a significant part in your vision, and in order to see your best you need to have a healthy cornea.
Like glass, the cornea is smooth and clear. But it is also very strong and durable. your cornea protects your eyes from environmental factors such as germs and dust. Like the cornea, the eyelid, tears and sclera are important when protecting your eyes.
There are numerous conditions that can affect your cornea, some of which are: