Conjunctivitis is an inflammation of the outer lining of the eye and/or eyelids. It can occur when the protective tissue that prevents dirt and debris from getting into a dog’s eyes becomes inflamed. It is not life-threatening and while it can be distressing for the dog, provided it is treated as soon as possible by a vet, it will usually clear up very quickly. To prevent discharge from drying and crusting, infected eye(s) should be cleaned gently using pre-boiled tepid water and sterile cotton wool.


There are many other conditions that may look like Conjunctivitis and while some are easily treated, others are more serious.

Symptoms can including squinting or spasmodic blinking; red, sore eyes; discharge, which may be clear or contain mucus; swelling.


There are many various reasons a dog’s eyes can become infected. Over the counter remedies should not be used unless advised by a vet. Possible causes are:

  • Bacterial, viral or fungal infections
  • Disease
  • Environmental (e.g. chemicals, smoke etc)
  • Contaminated bedding;
  • Substances
  • Diet