Optic neuritis Flashcards
1
Q
Causes of optic neuritis?
A
MS - most common
DM
Syphilis
2
Q
Features of optic neuritis?
A
- unilateral decrease in visual acuity over hours or days
- poor discrimination of colours, ‘red desaturation’
- pain worse on eye movement
- RAPD
- central scotoma
3
Q
Management for optic neuritis?
A
- high-dose steroids = usually IV Methylpred
- recovery usually takes 4-6 weeks
4
Q
Epidemiology of optic neuritis?
A
Adult women
Living at high latitude
5
Q
Pathophysiology of optic neuritis?
A
Inflammatory processes which lead to activation of T-cells that can cross the blood brain barrier and cause hypersensitivity reaction to neuronal structures
6
Q
Classic triad of features in optic neuritis?
A
Visual loss
Periocular pain
Dyschromatopsia = deficiency in colour vision
