Distichiae are abnormal cilia arising from the eyelid margin at/or close to the level of the meibomian gland openings.In most cases, distichiae do not result in significant ocular pathology however, contact between distichiae the corneal surface, may result in discomfort marked by epiphora & blepharospasm and may lead to secondary keratitis and/or corneal ulceration.Distichiae may affect one or both eyelids, (upper and/or lower). Distichiae occur commonly in dogs and less commonly in cats.Commonly affected breeds include the Cocker Spaniel, Boxer, English Bulldog, Yorkshire Terrier & Shih Tzu.