The Eustachian tube connects the throat and the middle ear (the site of a typical  ear infection ) and allows air to travel between them and equalize the pressures. When the Eustachian tube is temporarily pinched off, pressure can build up in the middle ear.
Visitation is a matter of state law, but generally speaking, every state allows parents to exercise a reasonable amount of visitation with their children, which generally means enough time to establish and maintain a meaningful relationship.
Who Should Attend the Visitation. Most of the time, a funeral visitation is open to anyone who knew the deceased or someone in the family. However, the family might decide to make it only open to family and close friends. Honor this request. Doing otherwise adds stress to the people who are dealing with immense grief.