If there is discharge from the eyes and black shadows appear after congestion, it is recommended to go to the ophthalmology department of the hospital as soon as possible for examination to see if it is caused by uveitis, conjunctivitis, etc., and then give general treatment and medication. The discharge and congestion of the eye is usually caused by inflammation of the eye, and different inflammatory diseases have different dangers, but all of them may cause dark shadows floating in the eye. Uveitis: it will cause a large number of white blood cells to enter the vitreous body, forming cloudy clumps in the vitreous body, which will lead to dark shadows in the field of vision, and need to be treated with hormonal drugs to suppress the immune response to eliminate the inflammation, such as oral prednisolone acetate tablets and so on. Conjunctivitis: It is an inflammation that occurs on the surface of the eye, but the secretion formed by the inflammation stimulus may float to the surface of the cornea with the tear flushing, thus blocking the patient’s vision and making the patient feel that there are black shadows floating in the field of vision, which needs to be treated with antibiotic eye drops, such as ofloxacin eye drops, tobramycin eye drops, etc. The patient needs to go to the eye department of a hospital as soon as possible. Patients need to go to the ophthalmology department of the hospital as soon as possible after a detailed examination to confirm the diagnosis, and then by the doctor to formulate a scientific and reasonable treatment program to eliminate the symptoms. The medication should be used under the guidance of a doctor, do not blindly self-medication.