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.
1. the act of visiting. 2. a formal visit, as one granted by a court to a divorced parent to visit a child in custody of the other parent. 3. a visit for the purpose of making an official examination or inspection. 4. (cap.) a. the visit of the Virgin Mary to her cousin Elizabeth. Luke 1:36-56.