The eye is one of the most complex organs in the body. Responsible for taking light signals to the brain, it functions as a natural camera that is an extension of the brain. It has several layers that are similar to the lens of the camera, the film, and the lens cover. Any part of the eye can be involved in the disease process, and may require a sub-specialist. AJEH has specialists in all areas of ophthalmology that deal exclusively with specific diseases of the eye and surrounding areas. Like the glass on a watch, the cornea is the clear protective coating in the front of the eye that allows light to pass through it without distortion. It covers the colored iris. The lens of the eye focuses on the image which is then transmitted through the cornea to the retina. Therefore, it must be clear and regularly shaped to give good vision. These images are then transferred via the optic nerve to the brain where sight is interpreted. A "scratched" cornea, when the surface layer itorn, is extremely painful.