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Unformatted text preview: photoreceptors: rods & cones rods: respond to dim light; blurry shades of gray cones: respond to bright light; sharp, color vision bipolar cells: link between photoreceptors & ganglion cells ganglion cells: receive input from bipolar cells & their axons leave eye as optic nerve o blind spot (optic disc): location on retina where the optic nerve exits eye o fovea centralis: only cones present; region of greatest visual acuity Internal Chambers & Fluids: o Posterior segment: posterior to lens; contains vitreous humor o Anterior segment: anterior to lens; composed of anterior chamber (in front of iris) & posterior chamber (between iris & lens) both contain aqueous humor Aqueous humor drains into venous blood through the scleral canal of Schlemm; blocked drainage can cause glaucoma (compression of retina & optic nerve) & eventually blindness page4...
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This note was uploaded on 12/04/2011 for the course ANTHRO 2000 taught by Professor Monicaoyola during the Fall '10 term at Broward College.
- Fall '10