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Entropion is the inward rolling of the edges of the eyelid which causes the horse's eyelashes to come into contact with the surface of the cornea. It is either anatomical from too much eyelid skin, associated with malnutrition, dehydration, atrophy of orbital fat due to a systemic disease, or occurs secondary to enophthalmos from eye pain. In adult horses, entropion is usually associated with muscle spasms from chronic eye pain or previous eyelid trauma.


Eyelid rolls inward
Noticeable irritation leading to redness


  • Clinical signs
  • Physical exam


Surgical correction

Scientific Research References

Good Overviews

Age Range

Entropion is usually seen in newborn foals.