Eye Anatomy

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(734) 667-4704 or Online

405 North Canton Center
Canton, Michigan 48187
Emergency Phone: (734) 667-4704

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Monday:9:00 am thru 5:00 pm
Tuesday:9:00 pm thru 5:00 pm
Wednesday:9:00 am thru 5:00 pm
Thursday:9:00 am thru 1:00 pm
Friday:8:00 am thru 1:00 pm

Eye Anatomy

CORNEA:	Transparent front segment of the eye that covers iris, pupil, and anterior chamber, and provides most of an eye's optical power.
PUPIL:	Variable-sized, circular opening in center of iris; it appears as a black circle and it regulates the amount of light that enters the eye.
IRIS:	Pigmented tissue lying behind cornea that (1) gives color to the eye, and (2) controls amount of light entering the eye by varying size of black pupillary opening; separates the anterior chamber from the posterior chamber.
LENS:	Natural lens of eye; transparent intraocular tissue that helps bring rays of light to focus on the retina.
RETINA:	Part of the eye that converts what we see into electrical impulses sent along the optic nerve for transmission back to the brain. Consists ofmany named layers that include rods and cones.
MACULA:	Small, specialized central area of the retina responsible for the sharpest central vision.
VITREOUS:	Transparent, colorless, gelatinous filling; in the rear two-thirds of the interior of the eyeball, between the lens and the retina.
OPTIC NERVE:	Largest sensory nerve of the eye; carries impulses for sight from retina to brain.
SCLERA:	The white of the eye; a protective fibrous layer that is the outer covering of the eyeball except for the part that is the cornea.
CILIARY BODY:	A muscular ring under the surface of the eyeball; helps the eye focus by changing the len’s shape and also produces aqueous humor.
CHOROID:	The vascular layer between the sclera and the retina; the blood vessels in the choroid help provide oxygen and nutrients to the eye.

Video Education

Browse our patient education videos to learn more about your vision and eye health.

Welcome to Eye Definition

Our optometric practice proudly serves Canton, MI and the surrounding Westland, Plymouth, Northville, Belleville, Livonia, Ann Arbor, and Ypsilanti communities with quality service and a friendly staff. Dr. Jay Lizyness takes great pride in offering every patient the absolute best in vision care, whether through fitting them with eyeglasses or contact lenses, diagnosing cataracts, glaucoma, and other eye diseases, or recommending LASIK and other eye surgery procedures.

Our expert optometrist and experienced staff will take the time to answer all of your questions, explain treatment options, and provide the highest quality eye health treatments available.

Built on the foundation of patient convenience and satisfaction, Eye Definition serves all of your family’s eye care needs under one roof. Come visit our modern facility and friendly doctor and staff! Call our office at (734) 667-4704 to schedule and exam or book your appointment online.