Causes of sudden swollen eyes in dogs:

1. Local mosquito bites cause allergies, and the dog’s eyes appear obvious itching, and then they scratch continuously, causing the eyes to swell. Symptoms such as swollen eyes and inflammation may occur.

2. Local allergic reactions caused by some irritating sprays or some foods can also cause swelling of the dog's eyes.

3. Dogs suffer from severe itching due to ear canal diseases, such as otitis or ear mites. The dog may accidentally injure the eyes or the skin around the eyes, resulting in swollen eyes.

4. Some dogs suffer from facial swelling around the eyes caused by allergic reactions to vaccines.

Solutions to sudden swollen dog eyes:

1. It is recommended to use ice packs to apply cold compresses to the dog’s eyes to help reduce swelling, and then determine whether the dog’s eyes are swollen. Causes of eye swelling, and then take appropriate treatment measures.

2. If the eye is infected with bacteria and causes inflammation and swelling, eye drops should be used to reduce inflammation.

3. If the swelling is caused by a scratch, you should use eyewash to clean your eyes first, and then use anti-inflammatory eye drops or oral anti-inflammatory drugs for treatment.

4. If it is caused by ear canal disease, the dog’s ear canal disease should be treated and the dog’s eye swelling should be solved.