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.
The purpose of supervised visitation is to provide a safe and neutral environment for children to have a relationship with parents, and is often used in high conflict situations. 1  Many courts take the position that it is better to make an error that protects the child as opposed to leaving a child at risk.