It is an abnormality caused by an accumulation of fluid in the tissues that are part of the inner surface of the eyelid, almost always the upper one, which causes such a pronounced inflammation that, in some cases, it prevents vision and makes it difficult to open the eye.
Treatment: If it is an allergic origin, antihistamines are used. a) avoid the use of makeup. b) use artificial tears. c) avoid rubbing your eyes. d) reduce or eliminate salt intake. e) cold water damp cloths: they can help to improve swelling.