What is the clear tissue covering the front of the eye?

The clear tissue covering the front of the eye is known as the cornea. This transparent layer serves several essential functions. Firstly, it helps to focus light as it enters the eye, contributing to our ability to see clearly. The cornea is the outermost part of the eye, and its curved shape plays a crucial role in refracting light. Additionally, the cornea has a protective function, shielding the inner components of the eye from dust, germs, and other harmful elements.

In terms of anatomy, the cornea is avascular, meaning it doesn't have blood vessels, which helps maintain its clarity. It receives nutrients from the tears and the aqueous humor, the fluid right behind it. This unique structure allows the cornea to maintain transparency while also serving as a protective barrier.