It refers to seeing two overlapping or separate images of a single that can be displaced vertically, horizontally, rotationally, or both vertically and horizontally with each other. The disorder is usually the result of extraocular muscle dysfunction, where the eyes are functional but are unable to turn and focus on an object. It can affect one eye or both eyes and can be a symptom of severe health problems.


Also known as

  • Double Vision


It may be associated with:

  • Aneurysm
  • Black Eye
  • Brain tumors and cancers
  • Cataract
  • Dry eyes
  • Graves' disease
  • Guillain-Barre syndrome
  • Head injury
  • Increased pressure inside the brain from trauma, bleeding, or infection
  • Infections such as shingles or herpes zoster
  • Keratoconus
  • Microvascular Cranial Nerve Palsy
  • Migraine
  • Multiple sclerosis
  • Nerve or muscle damage
  • Scars caused by disease, injury or infection
  • Strabismus
  • Stroke or transient ischemic attack (TIA)