Intracavitary Pressure Monitoring from Chiasmatic Mass Lesions: How Much Decompression Is Enough?

Intracranial pressure has long been an important factor in causing compression of neural elements with the cranial cavity. Accepting optic chiasm and optic nerves as critical neural structures we postulated that they should be subject to the same effects of pressure as other neural tissue. Intracranial pressure is generally accepted to range from 14-21 mmHg before the development of symptoms. Within this range pulsations are generally visible within the CSF space.