If the defect fails to respect the vertical or horizontal meridian, where is the lesion?
Outer retina or choroid
If the defect respects the horizontal, where is the lesion?
Optic Nerve/NFL
If the defect respects the vertical, where is the lesion?
Chiasm or retrochiasm
If the defect respects the horizontal & vertical, where is the lesion?
Occipital cortex
A lesion in the inferior chiasm causes what type of VF defect?
Superior VF defect
A lesion in the superior chiasm causes what type of VF defect?
Inferior VF defect
If there is a lesion in the superior occipital lobe, where will the defect be?
- inferior defect
- respects inferior vertical
If there is a lesion in the inferior occipital lobe, where will the defect be?
- Superior VF defect
- Respects superior vertical
A mass in the pituitary gland = ?
Pituitary adenoma
A mass in the infundibulum (pituitary stalk) = ?
Craniopharyngioma
A mass in the circle of willis = ?
Aneurysm
A mass in the tuberculum sellae = ?
Meningioma
A mass at the chiasm = ?
Glioma
A mass in the 3rd ventricle = ?
Hydrocephalus
A HSP esophoric patient will have what type of vision?
Gap in vision
A HSP exophoric patient will have what type of vision?
Sensory diplopia
A HSP vertical phoria patient will have what type of vision?
elongated/stretched
What are the diseases in the 5A emergency club?
- Pituitary apoplexy
- Papilledema
- GCA
- Carotid Artery Dissection
- Aneurysm
Why is pituitary apoplexy an emergency?
Adrenal failure can lead to shock and death
How is a prolactinoma treated?
Dopaminergic agonists
Pituitary tumors cause what % of chiasmal syndromes?
50-55%
Craniopharyngiomas cause what % of chiasmal syndromes? What type?
20-25%
Posterior chiasmal syndrome
Meningiomas and gliomas make up what % of chiasmal syndrome?
Mening = 10% Gliomas = 7%
