Abstract
The intracranial route seems to be more successful and safer because it allows more effective control against breaking of the cribriform plate and possible damage to the meninges. The most extensive type of cranio-facial osteotomy is described here, since it constitutes a radical correction of OR.H. by bringing the whole of the “useful orbits” closer together. We also describe some personal variations of the basic procedures. Special reference will be made to the attempt to preserve olfaction, as recommended by Converse & Ransohoff.