Astronauts living on the International Space Station (ISS) experience changes to the visual system that raise concerns about the possibility of vision loss during future manned missions to Mars or other destinations, according to researchers.
First author Dr. Andrew G. Lee, chairman of Ophthalmology at Houston Methodist Hospital in Texas, and colleagues described the cluster of “novel and unique physiologic and pathologic systemic and neuro-ocular responses . . . documented in astronauts during and after long-duration space flight,” known as space flight-associated neuro-ocular syndrome (SANS), in a special communication to JAMA Ophthalmology, online July 20.