Optic neuritis

Question 1

How to test optic nerve function?

Answer 1

visual acuity- snellen chart
colour vision
pupils- check for RAPD
visual fields
optic nerve appearance

Question 2

List two optic nerve related conditions where you get sudden vision loss

Answer 2

optic neuritis
ischaemic optic neuropathy

Question 3

WHat is the presentation of optic neuritis?

Answer 3

reduced vision
unilateral
patchy
pain on eye movements
reduced colour vision
vision returns

Question 4

What might you see in fundoscopy in optic neuritis?

Answer 4

disc swelling

Question 5

List two causes of atypical optic neuritis

Answer 5

Infection: TB/Syphillis
Inflammation
Vasculitis/Uveitis/Neuroretinitis/Scleritis
Neuromyelitis optica (Devic’s disease)
Anterior ischemic optic neuropathy (tends to be painless in nature)
Neoplastic: Compresive or Infiltrative
Leber’s hereditary optic neuropathy