Optic Neuritis

Etiology

  • Autoimmune
  • Presenting feature of MS 15-20%

Risk Factors

  • F>M
  • Age 20-50
  • Hx known MS

Symptoms

  • Blurry vision
  • Progresses over hours to days
  • Typically unilateral
  • 90% w/vague pain→ worse w/eye movement
  • 75% recover acuity

Physical Exam Findings

  • Decreased acuity
  • Often central field loss
  • 1/3 w/abnormal appearing optic disc
  • Sometimes afferent pupil defect→ constricts when light shined in unaffected eye, but not to direct light