Visual Field Deficits Flashcards Preview

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Flashcards in Visual Field Deficits Deck (17)
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1

Optic n lesion?

Monocular anopia

2

Bitemporal hemianopia?

Optic chiasm lesion (pituitary tumor, Wernicke-Korsakoff)

3

Left homonymous hemianopia?

Lesion of contralateral optic tract

4

Tract located in temporal lobe?

Loop of Meyer

5

Location of dorsal optic radiation?

Parietal lobe

6

Path of loop of Meyer?

Loops around inferior horn of lateral ventricle

7

Path of dorsal optic radiation?

Internal capsule

8

Receives input from inferior retina?

Loop of Meyer

9

Receive input from superior retina?

Dorsal optic radiation

10

Blood supply to temporal and parietal lobes?

MCA

11

Pt presents with blindness and aphasia, what kind of blindness would he have?

Contralateral upper quandrantinopia--Wernicke's due to temporal lobe lesion

12

Left lower quandrantinopia?

Contralateral dorsal optic radiation

13

Left hemianopia with macular sparing?

Lesion of PCA or primary visual cortex (occipital lobe)

14

Reason why macula is spared?

Macula receives bilateral projection to the occipital lobe

15

Central scotoma?

Macular degeneration

16

Binasal hemianopia?

Lesion of lateral edges of optic chiasm

17

What causes binasal hemianopia?

Calcified carotids