Optic neuritis

Optic neuritis

• multiple sclerosis
  multiple sclerosis
  You've never been tested on this concept
  You've not yet rated this concept.
  : the commonest associated disease
• diabetes
• syphilis

• unilateral decrease in visual acuity over hours or days
• poor discrimination of colours, 'red desaturation'
  Colour vision ('red desaturation') is affected in optic neuritis
  You've never been tested on this concept
  You've not yet rated this concept.
  Importance: 82
• pain worse on eye movement
• relative afferent pupillary defect
  relative afferent pupillary defect
  You've never been tested on this concept
  You've not yet rated this concept.
• central scotoma
  A central scotoma is a feature of optic neuritis
  You've never been tested on this concept
  You've not yet rated this concept.
  Importance: 79

• MRI of the brain and orbits with gadolinium contrast
  MRI of the brain and orbits with gadolinium contrast
  You've never been tested on this concept
  You've not yet rated this concept.
  is diagnostic in most cases

• high-dose steroids
  high-dose steroids
  You've never been tested on this concept
  You've not yet rated this concept.
• recovery usually takes 4-6 weeks

• MRI: if > 3 white-matter lesions, 5-year risk of developing multiple sclerosis is c. 50%