Distichiasis in dogs: when and how to treat it
2-year-old Cocker Spaniel with epiphora, intermittent blepharospasm and recurrent superficial keratitis. Under magnification you see multiple fine lashes emerging from the meibomian gland openings of both eyelids, contacting the cornea. They were epilated 6 weeks ago and have regrown.
What is the most appropriate treatment?
chevron_right Show answer and explanation
A. Repeat manual epilation monthly indefinitely
Epilation removes the hair but not the follicle, so lashes regrow within a few weeks, often thicker. It is a temporary measure, not a solution.
B. Full-thickness wedge resection of both eyelids
Distichia are spread along much of the margin; resecting that much eyelid would distort the palpebral fissure. A wedge would only make sense for very localised lesions.
C. Destruction of the follicles by cryoepilation or electroepilation (or transconjunctival resection), under magnification
Correct. Destroying the follicle prevents recurrence. Cryoepilation is applied via the tarsal conjunctiva and may temporarily depigment the margin. It requires general anaesthesia and magnification.
D. No treatment: distichia never cause corneal lesions
Many distichia are fine and cause no problems, but this dog has recurrent keratitis and discomfort: treatment is indicated.
lightbulb Key takeaway
Distichiasis is very common in Cocker Spaniels, Shih Tzus, Bulldogs, Poodles and Lhasa Apsos and is often an incidental finding. Treat only if there are signs (epiphora, blepharospasm, keratitis); if you do, destroy the follicle.
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Updated: October 31, 2026 · Educational content for veterinary professionals. It does not replace current clinical guidelines or the judgement of the attending veterinarian.