What Causes Swollen Eye in Dogs


A dogs swollen eye can mean many things. It might suggest an intense or chronic infection or it might be a symptom of a long-term or progressive disease in the body.¬†Other symptoms can often be determined to help determine any issues that might be contributing to your dog’s swollen eye, and treatments might be straight applied to the eye with an ointment or eyewash, or may be given in the kind of oral or other medications to treat any underlying disease. Treatment will depend upon what’s causing the symptoms.

Main Causes of Swollen Eye in Dogs


One of the first signs of allergies or an allergic reaction to a toxic substance or bug bite might show up through a dog’s swollen eye. One or both eyes might swell in response to the allergic reaction and other symptoms might appear, such as sticky discharge or redness of the eye or eyelid.

If you believe an insect bite or typical allergy, you might want to wait on about 24 hours to see if the swelling subsides. Otherwise, it might be suggested for your dog to receive medication or a shot to prevent infection or more symptoms. Tests may also be gone to rule out other conditions that might be contributing to the swelling.


A dog’s swollen eye might suggest conjunctivitis. Conjunctivitis is triggered by inflammation in the mucous membranes of the eye and may result from bacteria, an infection or less frequently, a tick bite or other parasitic infection. This condition may be acute or chronic, might be accompanied by other symptoms, and might become severe if left neglected.

For chronic conjunctivitis, keeping the eye tidy and clear of discharge can be really beneficial. Treatment options will depend upon what has actually triggered the condition. Long-term medication might be needed to treat a disease and keep conjunctivitis, as a symptom, under control. Eyedrops and anti-bacterial medications are commonly used to clear up inflammation and swelling related to this type of infection.


Glaucoma causes pressure within the eye causing swelling with a cloudy look or substantial inflammation. The pupils may increase the size of and a dog’s swollen eye, due to glaucoma, might require emergency situation care to lower the pressure within the eye before long-term loss of sight occurs. Glaucoma can be brought on by specific imbalances of the body’s natural chemicals or inhabitants, such as yeast, and certain types of dog appear to be a little more susceptible to this condition.


Infections, such as distemper and liver disease, may cause swollen eyes in dogs, in addition to a plethora of other symptoms. Under these conditions, swelling may arise from fluid accumulation, lesions, retinal detachment or inflammation. Particular types of screening can assist to reveal which infection might be the cause of bothersome eye symptoms.

Other Conditions and Diseases

Frequently, a dog’s swollen eye can help to indicate a more major issue within the body. For example, hypothyroidism can cause issues with the retina or chronic conjunctivitis. Blood or vascular diseases may be shown by a dog’s swollen eye, accompanied by hemorrhaging, retinal detachment or excessive fluid.

Also read: Cherry Eye in Dogs


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