The difference between the cornea and the iris lies in location, function and other aspects.
1. Location: The cornea is the part of the eye often referred to as the black eye, located at the very front of the eye, like a transparent convex lens. The iris is located in the front part of the vascular membrane, with the pupil in the center, covered by the cornea.
2. Role: the cornea is the main refractive medium of the eye, has a barrier effect, can protect the contents of the eye. In the center of the iris is the pupil, which can be controlled by muscles to regulate the size of the pupil to adjust the light and darkness.
3. Other: the cornea has no blood vessels, rich in sensory nerves, the Department of the ophthalmic branch of the trigeminal nerve through the posterior ciliary long nerve innervation, so the sensation is relatively sharp. The iris contains a lot of pigment, blood vessels and muscles, such as the pupillary sphincter, pupil opening muscle.
When there is a suspicion of damage to the cornea or iris, it is recommended to consult a doctor in a timely manner for a complete examination and standardized treatment.