Anatomy of the Eye

iris

• colored part of the eye; allows or restricts light in the eye

• the outer layer of the eye that protects it

• the transparent front part of the eye that covers the iris

• the part of the eye responsible for sharp vision

vitreous humor

• fluid in the main chamber of the eye

• a type of eye surgery

• the outer layer of the eye

• a condition affecting vision

retina

• receives light & translates into nerve impulses

• produces hormones for vision

• filters out harmful UV rays

• stores visual memories

fatty tissue

• protects and cushion the eye

• produces tears for lubrication

• transmits light to the retina

• regulates eye pressure

cones

• perceives color

• detects motion

• provides depth perception

• transmits sound

rods

• perceive light impulses in dim light

• detect color in bright light

• transmit sound signals

• control muscle movement

tapetum lucidum(not found on humans)

• Reflects light on retina to provide night vision in animals

• Absorbs excess light to enhance color vision

• Protects the eye from UV radiation

• Increases visual acuity in bright light

pupil

• the colored part of the eye

• the transparent layer covering the eye

• hole in the iris controls the amount of light into the eye

• the part of the eye that focuses light

aqueous humor

• fluid that helps to retain the shape of the cornea

• a type of tear fluid produced by the lacrimal gland

• a gel-like substance found in the vitreous body

• a fluid that nourishes the retina

sclera

• tough outer covering-gives the eye its shape

• transparent layer that covers the front of the eye

• muscle that controls the shape of the lens

• inner layer responsible for light absorption