1. EQ; What are the components of your eye?
EYE ANATOMY
EQ; What are the components of your eye?

2. Root Words

3. Eye Anatomy

4. Eye Anatomy The orbital bone Lacrimal gland The eye socket
Eye is cushioned within orbit by pads of fat
Lacrimal gland
Produces tears

5. Eye Anatomy Eyelids (L): Eyelashes (L):
Protection against particles and light
Help spread tears over surface of eye- moist & comfort
Eyelashes (L):
Filter out foreign matter

6. Eye Anatomy Sclera (S): “White of the eye”
Tough, opaque tissue that extends around the eye
Attached to the extraocular muscles

7. Eye Anatomy Extraocular Muscles
Help move the eye left, right, up, down and diagonally
These 6 muscles are:
Superior rectus
Inferior rectus
Medial rectus
Lateral rectus
Inferior oblique
Superior oblique

8. Eye Anatomy Cornea (K): Clear tissue in front of the Iris Function:
Focus light as it enters eye
Avascular
Only organ that has no blood vessels

9. Eye Anatomy Pupil (P): Iris (I): Two muscle fibers:
Central opening of iris
Iris (I):
Ring shaped tissue
Colored part of eye
Controls the amount of light that enters the eye
Two muscle fibers:
Contraction
Constricts pupil in bright light
Dilation
Dilates pupil in dark

10. Eye Anatomy Crystalline Lens: Clear, flexible structure
Behind the iris & pupil
The lens & ciliary body help control fine focusing of light as it passes through the eye

11. Eye Anatomy Vitreous Chamber:
Located behind the lens & in front of the retina
Filled with a gel-like fluid called the vitreous humor
The vitreous help maintain the shape of the eye

12. Eye Anatomy Retina: Acts like the film in a camera to create an image
Converts light signals into nerve signal then send these signals to the optic nerve
Optic nerve carries the signals to the brain
Rods- low light situations
Cones- allows you to see color
hhttp://www1.appstate.edu/~kms/classes/psy3203/EyePhysio/human_retina.htm

13. Eye Anatomy Optic Nerve A bundle of 1 million nerve fibers
Responsible for transmitting nerve signals from the eye to the brain
The optic disc is the front surface of the optic nerve
The optic disc is visible on the retina

14. Eye Anatomy Macula Located in the central part of the retina
Responsible for giving sharp central vision
Used for reading, recognizing faces, and watching TV

15. Optic Chiasm
The X-Shaped space infront of the pituitary gland where the optic nerves cross the brain

16. Ciliary Body Ciliary muscle, which changes the shape of the lens
when your eyes focus on something. This process is
called Accommodation.

17. tapetum lucidum
- A layer of tissue lying behind the retina that reflex
more light for the photoreceptors.
- Found in nocturnal mammals for night vision

18. Cataract Clouding of the lens which leads to decreased vision
Mostly due to age: degrading of the lens

19. Glaucoma
Disease that damages the optic nerve which results in blindness
Results from increased pressure from fluid build up

24. LEFT SIDE ACTIVITY
Draw and label the components of the eye. Describe the function of each of the components.