Neuroanatomy - Visual pathways exam 3
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| Retina | 3 neuron chain
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| 3 neuron chain | photoreceptors, bilpolar cells, ganglion cells (axons form optic nerve)
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| Light reflex | fibers project bilaterally from accomodation center in superior colliculus to Edinger-Westphal nucleus to ciliary ganglion
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| Argyll Robertson Pupils | usually the result of tertiary syphilis (accompanied by tabes dorsalis)
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| Argyll Robertson Pupils | pupils are small & not reactive to light
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| Arryll Robertson Pupils | accomodation reflex intact
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| blindness in one eye | lesion in optic n.
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| loss of peripheral vision | bitemporal hemianopsia
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| loss of peripheral vision | lesion in optic chiasm
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| loss of nasal visual field | nasal hemianopsia
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| loss of nasal visual field | lesion on side of chiasm
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| loss of R or L visual field | homonymous hemianopsia
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| Loss of R or L visual field | lesoin in optic tract or cortex
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| Loss of quadrant (both eyes) | superior quadrant anopsia
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| loss of quadrant (both eyes) | lesion in Meyer's loop
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