Neuro 11: Vision

Question 1

Fovea

Answer 1

Region of retina with highest visual acuity

Question 2

Macula

Answer 2

Region 3-5mm surrounding the fovea

Question 3

Optic disc

Answer 3

15 degrees medial to fovea. Where neuronal axons gather to form optic nerve

Question 4

Lesion of optic chiasm produces

Answer 4

Bitemporal visual field defect

Question 5

Lesion anterior to optic chiasm

Answer 5

Monocular visual field defect

Question 6

Lesion posterior to optic chiasm

Answer 6

Homonymous visual field defects contralaterally

Question 7

Optic tracts synapse at

Answer 7

LGN Lateral Geniculate Nucleus of the thalmus

Question 8

Lateral geniculate lesion visual defect

Answer 8

Contralateral homonymous hemianopia

Question 9

Temporal lobe lesion visual defect

Answer 9

Contralateral Homonymous superior quadrantanopia

Pie in the sky

Question 10

Parietal lobe lesion visual defect

Answer 10

Contralateral homonymous inferior quadrantanopia

Pie on floor

Question 11

Scotoma

Answer 11

Circumscribed region of visual loss

Question 12

Concentric Visual Loss

Answer 12

Caused by optic nerve compression, often with increased ICP

Question 13

Amaurosis Fugax

Answer 13

Occurs in TIA. Caused by transient occlusion of retinal artery