Neuro-ophthal disorders Flashcards
1
Q
Afferent pupillary defect (Marcus-Gunn)- Eti
A
- Optic nerve lesion- ipsilateral optic nerve
- Macular lesion
2
Q
Afferent pupillary defect (Marcus-Gunn)- Sx
A
- Consensual light reflex is stronger than direct response of affected eye
- Absolute defect- no pupillary response in affected eye, consensual response present
3
Q
Horner sundrome- Eti
A
- Lesion in sympathetic pathway causing paresis of muller muscle and iris dilator
- Neuroblastoma, trauma, brainstem infarction
4
Q
Horner sundrome- Sx
A
- Ipsilateral ptosis, miosis & anhydrosis
- less pigmented iris
5
Q
Horner sundrome- Dx
A
- Topical cocaine- pupil doesn’t dilate
6
Q
Horner sundrome- Tx
A
-
7
Q
Optic neuritis- Eti
A
- Demyelination diseases- MS
- Viral infections, biologics, meningeal inflammation
8
Q
Optic neuritis- Sx
A
- Unilateral vision loss
- Pain behind eye with movement
- Loss of color vision
- Papillitis with flame hemorrhages
- Afferent pupillary defect
9
Q
Optic neuritis- Dx/ Tx
A
- RO optic nerve lesion
- Methylprednisolone
10
Q
Papilledema- Eti
A
- Increased inter cranial pressure
- Obese women, age 30
11
Q
Papilledema- Sx
A
- Bilateral swelling of optic discs
- Loss of disc margins
- HA, visual changes, difficulty concentrating
- Normal neuro exam
12
Q
Papilledema- Dx
A
Dx of exclusion
13
Q
Papilledema- Tx
A
- Self limiting, wt loss
- Lower intracranial pressure and manage headaches
14
Q
Nystagmus- Eti
A
- Repetitive, rhythmic oscillations of eyes
- Vestibular or optokinetic stimulation
15
Q
Tonic pupil- Eti
A
- Damage to ciliary ganglion- peripheral pathways
- Isolated, benign entitiy
