What is Conjunctivitis in Dogs?
What is it?
How is it Treated?
Breed Predispositions
Snubbed-nose breeds (brachycephalic breeds) and Cocker spaniels, Poodles, Lhasa Apsos, Shar Pei, St. Bernards, and Bloodhounds
Introduction
Oliver had always taken pride in caring for his loyal Dachshund, Daisy, ensuring she was happy and healthy. One morning, however, he noticed that Daisy’s eyes were red and swollen, with a thick discharge accumulating in the corners. Worried about his beloved pet’s sudden change in appearance, Oliver took Daisy to the veterinarian for a thorough evaluation. The vet diagnosed Daisy with conjunctivitis, a common but treatable eye condition in dogs.
Canine conjunctivitis, also known as canine pinkeye, is a common uncomfortable eye condition that affects dogs. It is characterized by inflammation of the conjunctiva, the clear tissue covering the eye’s white part and the eyelids’ inner surface. Pink eye in dogs can be caused by various factors, including allergies, infections (bacterial or viral), foreign objects in the eye, and irritants such as smoke or chemicals.
The severity of pink eye can range from mild to severe, with symptoms ranging from redness and swelling of the conjunctiva to discharge from both eyes to even one eye and squinting and rubbing at the affected eye, and an overall appearance of discomfort or pain. You may notice the start in one eye, then quickly spread to the other.
Causes of Conjunctivitis in Dogs
Canine conjunctivitis will depend upon various factors. Here are some of the most common causes of dog pink eye:
- Allergies: Conjunctivitis is most commonly associated with allergies like pollen, grass, and dust, which can cause conjunctiva inflammation.
- Infections: Bacterial Conjunctivitis and Viral Conjunctivitis are usually transmitted from other dogs or contracted with contaminated surfaces or objects.
- Foreign objects: If a foreign object, such as a piece of grass or a small particle, gets stuck in the eye, it can cause irritation and inflammation in your dog’s eye and eyelids.
- Irritants: Smoke, chemicals, and other irritants can cause your dog’s conjunctivitis.
Other potential causes include physical trauma to the eye, underlying eye conditions such as glaucoma or uveitis, and immune system disorders. It is essential to seek veterinary care if you suspect your dog is showing signs of conjunctivitis, as untreated or improperly treated conjunctivitis can lead to permanent eye damage.
Breeds Predisposed to Conjunctivitis
Due to their unique physical characteristics, certain dog breeds are predisposed to certain types of conjunctivitis.
- Brachycephalic breeds, such as Bulldogs, Pugs and Boston Terriers, are predisposed to chronic conjunctivitis due to their shortened muzzle and facial structure which can cause entropion (an inward rolling of the eyelid) and other eyelid problems.
- Breeds like Cocker spaniels, Poodles, and Lhasa Apsos have a higher risk of developing allergic conjunctivitis due to their tendency to have environmental allergies.
- Breeds like Shih Tzus, Shar Peis, St. Bernards, and bloodhounds have a genetically higher risk of developing dry eye leading to conjunctivitis
- It’s important to note that any dog can develop conjunctivitis and it’s not limited to these breeds, and proper diagnosis and treatment is important for all dogs.
Symptoms of Canine Conjunctivitis
If you suspect your dog may have signs of conjunctivitis, it’s essential to be aware of the potential symptoms of dog conjunctivitis. Some common symptoms may include the following:
- Redness and swelling of the conjunctiva
- Discharge from the eye (which can be transparent or yellowish, to even having green discharge from the eye)
- Squinting or rubbing at the affected eye
- An overall appearance of discomfort or pain
In severe cases, the eye may become swollen shut, or there may be ulceration of the cornea. If you notice any of these symptoms in your dog, it’s essential to seek veterinary care as soon as possible for treatment options. Left untreated, conjunctivitis or improperly treated can lead to more severe eye problems, such as vision loss or corneal ulceration.

How Do Vets Diagnose Conjunctivitis?
Veterinarians can diagnose conjunctivitis in dogs; however, it’s essential to go through a combination of physical examination and testing for the most effective treatment. During the physical examination, the veterinarian will look for signs of conjunctivitis, such as redness, swelling, and discharge from the eye. They may also use a light or a microscope to examine the eye more closely.
To confirm the diagnosis of conjunctivitis and determine the underlying cause, the veterinarian may also recommend one or more of the following tests:
- Cytology: This involves collecting a sample of the eye Secretion and examining it under a microscope to look for signs of infection or inflammation.
- Cultures: A sample of the eye Secretion may also be collected and sent to an outside laboratory to be cultured, which can help identify the specific type of bacteria or virus causing the infection.
- Allergy testing: If the veterinarian suspects that allergies may be causing conjunctivitis, they may recommend allergy testing to identify the specific allergens causing the reaction.
- Other tests: Depending on the specific symptoms and circumstances, the veterinarian may recommend tests such as blood work, x-rays, or ultrasound to rule out other potential causes of conjunctivitis or to assess the overall health of the dog.
Overall, diagnosing conjunctivitis aims to identify the condition’s underlying cause and determine the treatment for your dog’s conjunctivitis.
Treatment for Conjunctivitis in Dogs
The best treatment in dogs typically involves identifying and addressing the condition’s underlying cause and depending on the severity of symptoms and underlying cause. For example, topical medications are used to treat allergic conjunctivitis, and eye drops and Antibiotics are prescribed for bacterial conjunctivitis. Dry eye treatment involves lubricating the ocular surface and treating the underlying problem.
Antibiotics
Antibiotics often treat this condition when a bacterial infection has caused it. Depending on the severity of the disease, your veterinarian may choose to prescribe oral antibiotics or topical ointments placed directly into the affected eye(s). These medications work to reduce inflammation and kill off the bacterial organism that is causing symptoms.
Importantly, antibiotics alone will not cure Canine Conjunctivitis if a virus or fungus causes it. If these non-bacterial c, causes are suspected or confirmed by laboratory testing, your veterinarian may suggest other treatments, such as antiviral or antifungal medications; however, in some cases, supportive care (e.g., lubrication) may be sufficient treatment for solid symptoms to resolve on their own with no additional intervention.

Corticosteroids
Canine conjunctivitis is a common eye disease caused by bacterial, viral or allergic reactions. Corticosteroids are commonly used as a treatment approach for canine conjunctivitis – especially for allergic conjunctivitis.
Corticosteroids decrease inflammation, relieving symptoms such as redness of the eye, swelling and discharge. They also reduce tissue damage associated with the condition and decrease the chances of further complications.
Corticosteroids come in topical drops, injectable forms and oral medications. Topical drops are applied to the eyes several times daily for up to two weeks, unless otherwise indicated by your veterinarian. Systemic corticosteroids can also be prescribed irritating is a need for strong relief from severe symptoms such as eye ulcers due to secondary infections or other underlying conditions.
Warm Compress
A warm compress is one of the most effective ways to soothe irritation and reduce redness due to canine conjunctivitis. To use a warm compress to treat canine conjunctivitis, soak a clean cloth in warm water and squeeze out any excess moisture before gently applying it to your dog’s irritated eye area. Allow the fabric to remain in place for 10-15 minutes before discarding it or washing it for later use. Repeating this process several times daily helps reduce symptoms and relieve pain associated with canine conjunctivitis.
What Benefits Does a Warm Compress Offer?
Applying a warm compress to your dog’s eyes offers several benefits: It helps remove a crusty discharge, which may be causing additional discomfort; it helps reduce swelling; it increases circulation, which may boost healing; and it also helps open up blocked tear ducts that are causing too much pressure in your dog’s eyes. The warmth relaxes and eases any pain due to irritation caused by inflamed membranes on your dog’s eyeballs or eyelids, allowing them to feel more comfortable immediately after applying the compress.
It is essential to follow the veterinarian’s recommendations and appropriate treatment to keep the eyes clean and free from anything that covers your dog’s eye. Doing so can make your dog more comfortable and prevent pink eye from returning.
Prevention and Management of Conjunctivitis Diseases
Here are some tips for preventing and managing conjunctivitis; however, it’s essential to understand how infectious it can be and note that early treatment will result in a faster recovery.
- Always keep your pet’s eyes clean and free of any debris or matter that may irritate them. Use a gentle saline solution regularly to remove debris around the regularly
- Invest in quality tear stain removers to help reduce redness, itching, and inflammation around your pet’s eyes. Teardrops, especially for dogs, typically tear away grime while providing vitamins and supplements to promote healthy eye tissue repair and healing.
- Palliative remedies such as warm compresses on closed eyelids can reduce swelling or discomfort accompanying canine conjunctivitis symptoms.
- Make regular visits to the vet for eye exams; this helps identify any signs of infection or illness before they worsen into more severe conditions like glaucoma or corneal ulcers requiring more aggressive treatment.
- Consider prescribing antibiotic drops if an infection is present – these should be administered twice daily until symptoms improve; do not stop giving antibiotics prematurely, as this could further aggravate the condition or lead to recurring episodes of pink eye in dogs.
- If allergies are suspected, ask your vet about options like topical anti-inflammatory medications, steroids, and oral allergy tablets designed specifically for dogs which help soothe irritated eyes without drowsiness or side effects commonly associated with human medications such as drowsiness or nausea.
- Avoid certain environmental irritants like smog, dust, mites, pollen etc that could trigger flare-ups in your pet’s eyes; use pet shampoo/conditioner fortified with natural components such as aloe vera extract that cleanse fur whilst reducing itchiness from eye crusts caused by allergic reactions – make sure not to get any product into their eyes!
- Provide plenty of fresh air circulation indoors during peak seasons where allergens are most prominent (especially springtime). Vacuum regularly throughout the house to reduce potential triggers lurking within soft furnishings/carpets etc., then wash bedding weekly at a high temperature which will kill off dust mites/bacteria -these act as familiar sources of irritation amongst pets susceptible to conjunctivitis episodes!
Frequently Asked Questions
Disclaimer: The information provided on this veterinary website is intended for general educational purposes only and should not be considered as a substitute for professional veterinary advice, diagnosis, or treatment. Always consult a licensed veterinarian for any concerns or questions regarding the health and well-being of your pet. This website does not claim to cover every possible situation or provide exhaustive knowledge on the subjects presented. The owners and contributors of this website are not responsible for any harm or loss that may result from the use or misuse of the information provided herein.