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12 Cards in this Set
- Front
- Back
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Percentage of neurons that must be lost before a visual field defect is present
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50%
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Inferior Altitudinal VF Defect
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Non-arteritic anterior ischemic optic neuropathy (NAION)
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Enlarged blind spot VF Defect
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pseduotumor cerebri
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Central or centrocecal VF Defect
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nutritional/toxic retinopathy, normal tension glaucoma
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Bitemporal Hemianopsi VF Defect
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pituitary gland tumor (optic chiasm is superior to gland)
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Nasal Step VF Defect
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most common initial VF defect in POAG
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Paracentral and Arcuate VF Defect
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POAG; common
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Ring Scotoma VF Defect
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RP, glaucoma (double arcuate defects), and operator error
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Homonymous Hemianopsia VF Defect
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Middle Cerebral or Posterior Cerebral Stroke
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Superior VF Defect
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Severe dermatochalasis, not true VF loss
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Central and Paracentral VF Defect
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Chloroquine Bull's Eye Maculopathy
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Ocular Emergencies
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-AION
-Malignant HTN with papilledema -CN III palsy with pupil involvement (aneurysm) -Mucormycosis (fungal infection in DM and immunocompromised patient with black eschar) -CRAO |
