If a dog cannot open one eye half-closed, it may be caused by bacterial infection, allergies or trauma. You should first check whether the eyelids are red and swollen and whether the conjunctiva is congested. If you have the above symptoms, you may have a bacterial infection.

If a dog suddenly cannot open its eyes, the owner should check whether the dog's eyes are injured. If there is a wound, it should be disinfected and bandaged in time, and sprinkled with pet sulfate for care. If the wound is serious, it needs to be sent to the hospital for treatment.

If the dog has eaten too much salty food recently, such as leftovers, ham, bacon, etc., then the dog will have more eye feces and tears, and the eye feces will smear the dog's eyes. Eyes, causing the dog to be unable to open them. In this regard, owners should pay attention to some dogs' diet and feed less human food.