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9 Cards in this Set
- Front
- Back
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what deficits occur from diabetic retinopathy? why? |
-spotty/patchy vision, where there may be a few blind spots that a person can't see -excess blood sugar damages retinal blood vessels |
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what deficits occur from glaucoma? |
loss of peripheral vision |
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what is the cause of glaucoma? |
increased intraocular pressure damages the optic nerve |
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what are cataracts, what deficits do they cause? |
loss of lens transparency -vision appears cloudy |
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age related macular degeneration (AMD) |
damage to the macula (area around/including the fovea representing our central area of vision) -central vision is affected |
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what are the four projection areas from the retina via optic nerve? |
lateral geniculate nucleus (to primary visual cortex) pretectum (pupillary light reflex) superior colliculus (orienting eye movement) hypothalamus (circadium rhythms) |
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lateral geniculate nucleus (of the thalamus) |
-relays visual info to the primary visual cortex for conscious awareness |
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medial geniculate nucleus (of the thalamus) |
-relays info from inferior colliculus to auditory cortex -ventral cochlear nucleus and dorsal cochlear nucleus --> inferior colliculus -->medial geniculate nucleus of the thalamus |
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are visual pathways that do different things overlapping or parallel? |
parallel |
