Visual Field Deficits

Question 1

Optic n lesion?

Answer 1

Monocular anopia

Question 2

Bitemporal hemianopia?

Answer 2

Optic chiasm lesion (pituitary tumor, Wernicke-Korsakoff)

Question 3

Left homonymous hemianopia?

Answer 3

Lesion of contralateral optic tract

Question 4

Tract located in temporal lobe?

Answer 4

Loop of Meyer

Question 5

Location of dorsal optic radiation?

Answer 5

Parietal lobe

Question 6

Path of loop of Meyer?

Answer 6

Loops around inferior horn of lateral ventricle

Question 7

Path of dorsal optic radiation?

Answer 7

Internal capsule

Question 8

Receives input from inferior retina?

Answer 8

Loop of Meyer

Question 9

Receive input from superior retina?

Answer 9

Dorsal optic radiation

Question 10

Blood supply to temporal and parietal lobes?

Answer 10

MCA

Question 11

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

Answer 11

Contralateral upper quandrantinopia–Wernicke’s due to temporal lobe lesion

Question 12

Left lower quandrantinopia?

Answer 12

Contralateral dorsal optic radiation

Question 13

Left hemianopia with macular sparing?

Answer 13

Lesion of PCA or primary visual cortex (occipital lobe)

Question 14

Reason why macula is spared?

Answer 14

Macula receives bilateral projection to the occipital lobe

Question 15

Central scotoma?

Answer 15

Macular degeneration

Question 16

Binasal hemianopia?

Answer 16

Lesion of lateral edges of optic chiasm

Question 17

What causes binasal hemianopia?

Answer 17

Calcified carotids