For ears to work properly, the middle ear needs to be kept full of air. The eustachian tube, which usually does this, runs from the middle ear to the back of the throat. In children, this tube is not as vertical and wide as it will be when they get older, which means it doesn’t function as well. When the eustachian tube becomes blocked, air cannot enter the middle ear. The cells li... https://pacificviewent.com/glue-ear/