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The Eye. The Eye. The eye is an organ that can detect light and convert sit into a electro-chemical impulse that is transferred to the brain. External structures of the EYE. Tear gland. Caruncle. External structures of the EYE. Tear gland :. External structures of the EYE.
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The Eye The eye is an organ that can detect light and convert sit into a electro-chemical impulse that is transferred to the brain.
External structures of the EYE Tear gland Caruncle
External structures of the EYE • Tear gland:
External structures of the EYE • Tear gland: produces tears
Anterior structures of the EYE • Sclera:
Anterior structures of the EYE • Sclera: white area • Iris:
Anterior structures of the EYE • Sclera: white area • Iris: colored area that constricts and dilates • Pupil:
Anterior structures of the EYE • Sclera: white area • Iris: colored area that constricts and dilates • Pupil: hole in the iris • Time of death
Anterior structures of the EYE • Sclera: white area • Iris: colored area that constricts and dilates • Pupil: opening in the iris • Cornea:
Anterior structures of the EYE • Sclera: white area • Iris: colored area that constricts and dilates • Pupil: opening in the iris • Cornea: tough, clear layer that covers the front of the eye
Anterior structures of the EYE • Aqueous humor: fluid between the cornea and lens ?
Anterior structures of the EYE • Lens:
Anterior structures of the EYE • Lens: focuses the image
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Anterior structures of the EYE • Muscles and ligaments:
Anterior structures of the EYE • Muscles and ligaments: pull on lens to focus image
Internal structures of the EYE • Vitreous humor:
Internal structures of the EYE • Vitreous humor: thick gel that fills the back of the eye
Internal structures of the EYE • Vitreous humor: thick gel that fills the back of the eye
Internal structures of the EYE • Vitreous humor: thick gel that fills the back of the eye • What causes red eyes in a picture? • Retina: inner-most layer made of nervous tissue
Macula: “ the yellow spot’ , portion of the retina that contains highest concentration of cones, no rods Macula
Macula: “ the yellow spot’ , portion of the retina that contains highest concentration of cones, no rods • Fovea: Dimple in the center of Macula. High Visual acuity here Fovea
Optic Nerve: Group of nerve cells that transfer visual information from the retina to the vision centers of the brain via electrical impulses.
Optic Nerve: Group of nerve cells that transfer visual information from the retina to the vision centers of the brain via electrical impulses. • Blind spot: Our blind spot is caused by the absence of specialized photosensitive cells, or photoreceptors, in the part of the retina where the optic nerve exits the eye.
Lenses • Lens of the eye • Inverted image • 20/20