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 custodial parent is the individual that has primary physical custody of the child. The child does not reside with the non-custodial parent except during the time that the non-custodial parent has visitation. The courts generally encourage frequent and regular visitation when the parents live in the same locality and when it does not interfere with a childâs school schedule.