A problem that some astronauts face is the development of serious visual impairment conditions that are associated symptoms suggestive of elevated pressure on the brain, or increased intracranial pressure. This has prompted the National Space Biomedical Research Institute (NSBRI), a non-profit organization that is funded by NASA to partner with Vittamed (Boston), a med-tech firm that has developed a device to could non-invasively measure absolute intracranial pressure (ICP), to initiate a clinical research study.