A temporary phenomenon where vision in patients with optic neuritis, multiple sclerosis, and other similar conditions involving body overheat, stereotypically worsens. Changes in vision include transient visual obscurations, contrast sensitivity changes, and dyschromatopsia. It occurs as a result of increased core body temperature from factors such as exercise, a hot meal, hot weather, fever, hot tubs, and saunas.

Also Known As

  • Uhthoff's Syndrome
  • Uhthoff's Sign
  • Uhthoff's Symptom