Virtually, every being rely on their eyes to see and make sense of the world around them. Your eyes are a vital part of your health. In this article, I'll be enlightening you on the features of the eye, the defects, diseases and how you can care for your eyes. Please, Read to the end. Structures auxiliary to the eye The orbit The eye is protected from mechanical injury by being enclosed in a socket, or orbit, which is made up of portions of several of the bones of the skull to form a four-sided pyramid, the apex of which points back into the head. The optical foramen , the opening through which the optic nerve runs back into the brain and the large ophthalmic artery enters the orbit, is at the nasal side of the apex; the superior orbital fissure is a larger hole through which pass large veins and nerves. These nerves may carry nonvisual sensory messages e.g; pain or they may be motor nerves controlling the muscles of the eye. There are other fissures and canals tran