The anatomy of the eye

• Orbit - The bony opening in the skull that houses the eyeball.
• Sclera (SKLARE-uh) - The white outer covering of the eye.
• Cornea (KOR-nee-uh) - The transparent outer layer of the eye.
• Anterior chamber - The area of the eye located directly behind the cornea, containing aqueous humor.
• Aqueous humor (A-kweeus) - The fluid located in the anterior chamber that nourishes the cornea and lens
• Pupil - The opening in the
• Iris - The circular muscle in the front of the eye that controls the opening of the pupil.
• Lens - the clear structure behind the pupil and iris that focuses light on the retina
• Vitreous chamber (VIT-ree-us) - the large inner cavity of the eyeball.
• Vitreous humor - the jellylike substance contained by the vitreous chamber.
• Retina - the elaborate network of photoreceptors and interneurons at the back of the eye that is responsible for sensing light.
• Photoreceptor - specialized sensory cell in the retina that responds to light.
• Optic nerve - the fiber pathway formed by the axons of the ganglion cells as they leave the eye.
• Optic disk - the area in the retina where blood vessels and the optic nerve exit the eye.
• Macula (MACK-you-luh) - a 6 mm round area in the retina that is not covered by blood vessels and that is specialized for detailed vision.
• Central vision - the ability to perceive visual stimuli focused on the macula of the retina