Friends who keep pets must have encountered the problem of red and swollen eyes of pet dogs. Many pet friends may not care much about red and swollen eyes of dogs, but the editor must remind dogs that red and swollen eyes may cause diseases. The following is compiled by experts Questions and analysis on red and swollen dog eyes.

1. Dog eye discharge: The veterinary term for eye discharge is epiphora, which is the most common symptom of eye disease. Clear discharge is associated with tear drainage, although it can also be caused by tearing and inflammation (such as conjunctivitis). If the discharge is cloudy or purulent (thick, discolored), you probably have an eye infection.

2. Eye swelling: Swelling of the tissue behind the eye can push the eye forward. The eyeball itself may also swell, pushing the eye out of its socket. Symptoms: Protosis of the eye (compared to the other eye) Dilation of the pupil during gaze (caused by nerve damage) Inability to close the eyelids

Possible causes: head injury, eye bleeding after a traffic accident, infection, tumor and glaucoma. Any delay can cause the dog to lose its eyeball, and a veterinarian should be consulted immediately.

3. Third eyelid problem: The third eyelid is normal in some breeds (such as St. Bernard dogs), but in most dogs, if the third eyelid suddenly becomes bright and protruding, there may be a problem.

Symptoms of the third eyelid include: a whitish membrane protruding from the inner corner of the eye, often with a black edge; a pea-shaped reddish bump in the inner corner of the eye; a foreign body behind the third eyelid; eye pain; red eyes. If your dog develops any of the above symptoms, call your veterinarian immediately. . At the same time, you need to rinse your eyes and keep them moist.

4. Congenital eyelid and eyelash problems

The most common eyelid deformities are entropion and extropion. The eyelids turn inward, causing eyelashes to pierce the eyes, and the eyelids turn outward, causing tears to concentrate in the bags formed by the eyelids, making the cornea dry. . A dog's eyelashes can grow in the wrong direction, causing the eyelashes to rub against the eye, causing pain and redness. This condition is called inverted eyelashes

The so-called double row of eyelashes (Distichiasis) is a similar problem. The extra eyelashes on the eyelid margin will rub the eyes. If left untreated, these conditions can cause serious damage and even blindness, but fortunately these eyelashes can be surgically removed.

5. Conjunctivitis: It is a painful inflammation of the conjunctiva. The cause may be infection, scratching, congenital diseases, eyelid tumors or irritants in the eyes, such as dust or smoke.

Symptoms include: tearing, rubbing the eyes, and redness. When the cornea is inflamed, the cornea begins to become cloudy, even dark blue or completely opaque. Common in hepatitis, called (blue eye). The whites of the eyes will then become severely congested, and eventually chronic inflammation may even cause the melanin film to expand from one end of the eye to the other. If the cause of inflammation can be treated in time, the condition can be stopped or slowed down, and the melanin film can sometimes be removed with delicate surgery.