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Muscles, Nerves, and Blood Vessels of the Eyes

By

James Garrity

, MD, Mayo Clinic College of Medicine and Science

Last full review/revision Mar 2019| Content last modified Mar 2019
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The optic nerve (a cranial nerve), which carries impulses from the retina to the brain, as well as other cranial nerves, which transmit impulses to each eye muscle, travel through the orbit (the bony cavity that surrounds the eyeball).

An ophthalmic artery and a central retinal artery (an artery that branches off of the ophthalmic artery) provide blood to each eye.

Similarly, ophthalmic veins (vortex veins) and a central retinal vein drain blood from the eye. These blood vessels enter and leave through the back of the eye.

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Test your knowledge
Eye Redness
Eye redness is a condition in which the part of the eye that is normally white appears reddish. This occurs when blood vessels on the surface of the eye widen (dilate), bringing extra blood to the eye. Which of the following is NOT a frequent cause of eye redness? 
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