EYE ANATOMY. R OOT W ORDS E YE A NATOMY
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Transcript of 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