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14 Cards in this Set
- Front
- Back
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What is the area of greatest visual acuity? What is it inside? What does it contain?
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fovea, inside the macula
cones only |
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What does elevated intraocular pressure lead to?
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glaucoma
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What are rods sensitive to? cones?
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rods - 1 kind - gray, motion, night vision
cones - 3 kinds, color, object detail |
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Where does neuron #2 in the optic trajectory synapse?
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lateral geniculate body in the thalamus
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What dose the pigment epithelium do?
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supplies nutrients and Vit. A to the retina
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What is the embryonic origin of the ganglion cells?
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neural tube
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Where are the photo receptors in the eye in relation to transmitted light?
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furthest away
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What do amacrine cells do? horizontal cells?
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amacrine - motion speed and light intensity
horizontal cell - enhance contrast light |
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What are the 3 basic layers of the eye?
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1. rods + cones
2. neuron 1 - bipolar 3. neuron 2 - retinoganglion |
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What would a lesion of the R optic nerve before the chasm result in?
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anopsia of right eye
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What do lesions of the optic nerve at the chiasm result in? What is a common cause of this?
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binocular, bitemporal, and heteronymous hemianopsia
can be caused by pituitary tumors |
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What do lesions of the optic nerve past the chiasm result in? What is a common cause of this?
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binocular, contralateral, and homonymous
can be caused by vascular insult due to stroke |
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What is the fissure that divides the primary visual cortex?
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the calcarine fissure
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What are the three components of the primary visual cortext area, from most medial to most posterior?
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cuneus gyrus, lingual gyrus, and macular cortex
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