The eye is an organ of vital importance and quite complex since it is directly related to structures that connect with the brain. The eye captures light and converts it into nerve impulses that travel through the optic nerve to the brain for interpretation. But to understand how the eye works, we must first know…

The cornea is the avascular and transparent layer that covers the pupil and the iris. It is the layer that continues with the sclera and reaches the optic nerve in the posterior part. The anterior part is in contact with the tear film and the anterior part is in contact with the aqueous humor. …