A watery film bulges in the eye, which would be bulbar conjunctival edema. The surface of the white eyeball is covered with a conjunctiva, which is normally attached to the surface of the sclera. There are some causes that can cause edema of the conjunctiva, common causes include conjunctivitis or dry eye, rubbing the eyes vigorously when they are uncomfortable, and after rubbing the eyes repeatedly with the hands, the eyes will become severely edematous, and the conjunctiva will look like a layer of white film, watery, and it will protrude to the outside of the eyelids, which will look very intimidating. Therefore, no matter what the discomfort, do not use your hands to rub your eyes, but to find the cause of discomfort, symptomatic treatment, so as to solve the problem.