Visual Field Defects

Question 1

If the defect fails to respect the vertical or horizontal meridian, where is the lesion?

Answer 1

Outer retina or choroid

Question 2

If the defect respects the horizontal, where is the lesion?

Answer 2

Optic Nerve/NFL

Question 3

If the defect respects the vertical, where is the lesion?

Answer 3

Chiasm or retrochiasm

Question 4

If the defect respects the horizontal & vertical, where is the lesion?

Answer 4

Occipital cortex

Question 5

A lesion in the inferior chiasm causes what type of VF defect?

Answer 5

Superior VF defect

Question 6

A lesion in the superior chiasm causes what type of VF defect?

Answer 6

Inferior VF defect

Question 7

If there is a lesion in the superior occipital lobe, where will the defect be?

Answer 7

• inferior defect

- respects inferior vertical

Question 8

If there is a lesion in the inferior occipital lobe, where will the defect be?

Answer 8

• Superior VF defect

- Respects superior vertical

Question 9

A mass in the pituitary gland = ?

Answer 9

Pituitary adenoma

Question 10

A mass in the infundibulum (pituitary stalk) = ?

Answer 10

Craniopharyngioma

Question 11

A mass in the circle of willis = ?

Answer 11

Aneurysm

Question 12

A mass in the tuberculum sellae = ?

Answer 12

Meningioma

Question 13

A mass at the chiasm = ?

Answer 13

Glioma

Question 14

A mass in the 3rd ventricle = ?

Answer 14

Hydrocephalus

Question 15

A HSP esophoric patient will have what type of vision?

Answer 15

Gap in vision

Question 16

A HSP exophoric patient will have what type of vision?

Answer 16

Sensory diplopia

Question 17

A HSP vertical phoria patient will have what type of vision?

Answer 17

elongated/stretched

Question 18

What are the diseases in the 5A emergency club?

Answer 18

1. Pituitary apoplexy
2. Papilledema
3. GCA
4. Carotid Artery Dissection
5. Aneurysm

Question 19

Why is pituitary apoplexy an emergency?

Answer 19

Adrenal failure can lead to shock and death

Question 20

How is a prolactinoma treated?

Answer 20

Dopaminergic agonists

Question 21

Pituitary tumors cause what % of chiasmal syndromes?

Answer 21

50-55%

Question 22

Craniopharyngiomas cause what % of chiasmal syndromes? What type?

Answer 22

20-25%

Posterior chiasmal syndrome

Question 23

Meningiomas and gliomas make up what % of chiasmal syndrome?

Answer 23

Mening = 10%
Gliomas = 7%