When a dog suffers from eye diseases, a cloudy blue film will appear on the eyes, and it is necessary to go to the hospital for examination and treatment in time to avoid serious illness and impact on vision. Generally, eye diseases such as conjunctivitis, keratitis, and cataracts will cause blue film on the eyeballs. Once discovered, the dog can be given anti-inflammatory eye drops. If the condition is not serious, it can be cured in 1 to 2 weeks. If the condition is serious, it will require the guidance of a doctor. treat.