EYE ANATOMY. R OOT W ORDS E YE A NATOMY

EYE ANATOMY

Root Words

Eye Anatomy

http://everlastingelephants.blogspot.com/2009/08/what-is-eye-cataract.html

Eye Anatomy

http://commons.wikimedia.org/wiki/File:Eye_orbit_anatomy_anterior2.jpg

The orbital bone The eye socket Eye is cushioned within

orbit by pads of fat Lacrimal gland

Produces tears

http://mwsu-bio101.ning.com/forum/topics/distinct-human-celltypes-1?commentId=2263214%3AComment%3A10331

Eye Anatomy Eyelids (L):

Protection against particles and light

Help spread tears over surface of eye- moist & comfort

Eyelashes (L): Filter out foreign matter

http://www.medical-look.com/human_anatomy/organs/Eyelids_and_eyelashes.html

Eye Anatomy Sclera (S):

“White of the eye” Tough, opaque tissue that

extends around the eye Attached to the extraocular

muscles

http://www.thirdeyehealth.com/sclera.html

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

http://media.photobucket.com/image/introduction%20to%20eye%20anatomy/trimurtulu/Eye.jpg

Eye Anatomy Cornea (K):

Clear tissue infront of the Irisi

Function: Focus light as it enters eye

Avascular Only organ that has no

blood vessels

http://commons.wikimedia.org/wiki/File:Cornea.jpg

Eye Anatomy Pupil (P):

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

http://www.bioconsulting.com/Bio_Tech_Assessment.html

http://www.goodhope.org.uk/departments/eyedept/angleclosureetc.htm

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

http://www.smartplanet.com/business/blog/smart-takes/artificial-lens-implant-to-give-patients-high-definition-vision-better-than-2020/2558/

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

http://www.ophthobook.com/questions/question-how-many-chambers-are-there-in-the-eye

Eye Anatomy Retina:

Acts like the film in a camera to create an image

hhttp://www1.appstate.edu/~kms/classes/psy3203/EyePhysio/human_retina.htm

http://www.answersingenesis.org/tj/v13/i1/retina.asp

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

brainhhttp://www1.appstate.edu/~kms/classes/psy3203/EyePhysio/human_retina.htm

http://www.answersingenesis.org/tj/v13/i1/retina.asp

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

http://www.answersingenesis.org/tj/v13/i1/retina.asp

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

http://cssd.us/body.cfm?id=802

http://www.wollongong.youronlinecommunity.com.au/wollongong-online/2008/50/walkthrulife/eye-health.html

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

http://www.dukehealth.org/eye_center/specialties/macular_degeneration/care_guides/macular_degeneration_frequently_asked_questions

Optic ChiasmThe X-Shaped space infront of the pituitary gland where the optic nerves cross the brain

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

tapetum lucidum - A layer of tissue lying behind the retina that reflexmore light for the photoreceptors.

- Found in nocturnal mammals for night vision

CataractClouding of the lens which leads to

decreased visionMostly due to age: degrading of the lens

GlaucomaDisease that damages the optic nerve which

results in blindnessResults from increased pressure from fluid

build up