Eyeworm disease

Attention! This is a potentially life-threatening condition for your horse. Time is of the essence, contact your veterinarian immediately.Find a Vet

Eyeworm Disease

Thelaziasis

Eyeworm disease in horses is caused by the eyeworm (Thelazia spp.) parasite, which is transmitted by face flies. Thelazia lacrymalis is usually the parasite associated with most occurrences. The symptoms associated with eyeworm disease are sometimes absent or can vary from mild to severe conjunctivitis (pink eye) or inflammation of other areas of the eye including the cornea, tear ducts, tear sacs and eyelid.

Risk Factors

  • High Populations Of Face Flies On Premises
  • Horses Living On The Same Property As Bordering Property Containing Cattle

Seasonality

WinterSpringSummerAutumn