A Randomized, Sham Controlled, Masked Phase II Study to Evaluate the Neuroprotective Effect of Hyperbaric Oxygen Therapy on Optic Neuropathy

Inclusion Criteria: * Patients must meet all of the following criteria to join the study (all eligibility criteria must be met at the screening and baseline visits unless otherwise noted): * Participant must be at least 18. * Participant must has the ability to comply with the requirements of the study and complete the schedule of events (SOE). * Participant's with clinical evidence of optic neuropathy. * Participant must understand and sign the informed consent. If the participant's vision is impaired to the point where he/she cannot read the informed consent document, the document will be r…