Understand

• There are two types of canine glaucoma. Primary glaucoma is genetic, but secondary glaucoma is caused by other conditions such as eye disease or injury.
  
  

Early Symptoms

• Early signs of canine glaucoma include a dilated pupil and cloudiness in the cornea. The blood vessels in the white of the eye might enlarge and the eye might protrude.
  
  

Pain Symptoms

• Increased pressure in the eye is painful and causes an intense migraine. The pain might cause a dog to rub its eye, lose its appetite and become irritable. Its activity levels might also drop.
  
  

Considerations

• Primary glaucoma in dogs starts in one eye and eventually occurs in the other eye. But both types of canine glaucoma usually affect just one eye at first. A dog might have glaucoma if one eye appears abnormal compared with the other.
  
  

Warnings

• Signs of canine glaucoma often go unnoticed. Pay close attention to the dog and immediately seek veterinarian treatment if you notice any symptoms of canine glaucoma.