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What is the cornea?

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Although the cornea may look clear and seem to lack substance, it is a highly organized tissue. Unlike most tissues in the body, the cornea contains no blood vessels to nourish or protect it against infection. read more

The cornea, with the anterior chamber and lens, refracts light, with the cornea accounting for approximately two-thirds of the eye's total optical power. In humans, the refractive power of the cornea is approximately 43 dioptres. read more

The cornea also plays a key role in vision by helping focus the light that comes into the eye. The cornea is responsible for 65­-75 percent of the eye’s total focusing power. The cornea and lens of the eye are built to focus light on the retina, which is the light-sensitive tissue at the back of the eye. read more

The cornea is the eye's outermost layer. It is the clear, dome-shaped surface that covers the front of the eye. Structure of the Cornea . Although the cornea is clear and seems to lack substance, it is actually a highly organized group of cells and proteins. read more