Eye Discharge in Dogs

The causes and treatments of a dog’s eye discharge.


Congenital/Inherited disorders: Entropion, ectropion, distichiasis, imperforate lacrimal puncta, deficiency of tear-producing tissue, hypertrophy and prolapse of nictitating membrane (“cherry eye”), keratoconjunctivitis sicca (“dry eye”), corneal dystrophy (a condition that causes recurring corneal ulcers), or uveitis.

Irritation/Inflammation: Of the eye itself and/or surrounding tissues (conjunctivitis).

Infectious diseases: Distemper, infectious hepatitis, leptospirosis, secondary bacterial infections, or fungal infections (histoplasmosis, coccidioidomycosis, aspergillosis).

Foreign bodies: Corneal, scleral, or conjunctival.

Trauma: Corneal ulcers and other injuries, facial trauma causing eye injury or damage to tear-producing glands, removal of or damage to tear-producing gland during surgery for “cherry eye.”

Parasites/Parasite-borne diseases: Ehrlichiosis, Rocky Mountain spotted fever, borreliosis (Lyme disease).


Drug reaction: Exposure to oral sulfa-containing antibiotics, topical atropine, or topical anesthetics, all of which can cause keratoconjunctivitis (“dry eye”).

Immune-mediated diseases: Keratoconjunctivitis (“dry eye”) or uveitis.

Endocrine disorders: Hyperadrenocorticism (Cushing’s disease) or hypothyroidism.

Tumors: In eye or nasal passages.

What to do: Eye discharge may or may not be an emergency, depending on severity, cause, and other signs of illness. Contact your veterinarian or emergency clinic immediately for specific advice about your dog’s situation.

Disclaimer: DogChannel.com’s Dog Medical Conditions are intended for educational purposes only. They are not meant to replace the expertise and experience of a professional veterinarian. Do not use the information presented here to make decisions about your dog’s ailment. If you notice changes in your dog’s health or behavior, please take your pet to the nearest veterinarian or an emergency pet clinic as soon as possible.

Have a health question about your dog? Ask our 
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keih   pittsburgh, Pennsylvania

1/10/2016 10:18:57 AM

I have an American foxhound who is 13 and constantly has drainage at his eyes where when I pick off the scabs it is raw underneath. Please help.

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alice   Fullerton, California

5/10/2015 7:27:16 AM

what can I use to treat crusty eyes on my little yorkie? without going to the vet? he had a hard clump and it wet it with a washcloth and it came off but now there is a sore....what can I do

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Eileen - 249708   Port Perry, ON

12/30/2012 5:19:10 AM

Good information to know.

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skiw9748   Hartford, AL

11/30/2012 3:53:53 PM

This is good information to know !

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