+++++Of course, it's properly spelt 'mitre'!
In the East it's also called a mitre but it differs in design. The present day Eastern miter is made in the shape of a bulbous crown and may be constructed of number of materials such as brocade, damask, or cloth of gold. Embroidery may be used in its construction as well as use of jewels for decoration. The miters, while often of gold, may use other liturgical colors. Normally, there are four icons attached to the miter. These usually are icons of Jesus Christ, the Theotokos, John the Baptist, and the Cross. A cross surmounts the miter, either upright for bishop’s miters or laying flat on miters awarded to priests.
The wearing of the miter is a prerogative of bishops, but it may be awarded to archpriests, protopresbyters, and archimandrites. For example, Fr Robert Taft, SJ (R+I+P), who died recently was a mitred archimandrite.