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.
Custody can be restored to the parents by the court if the parent proves capable of caring for the child. Guardianship. Guardianship is when a person is responsible for the care and well-being of a child and has the legal authority to consent on behalf of a child. Under a guardianship arrangement the child's parents maintain their parental rights.