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.
Contact visitation is the most common and generally the most desired form of visiting an inmate. You are able to sit, usually at a small table and be with the inmate for a short period of time. Although contact can occur between you and the inmate, you are limited in how much touching can take place.