Vision problems and eye damage in space were the topic of this chapter. The
fact that microgravity causes vision loss was documented, with a trio of specific eye
maladies discussed. A half-dozen possible causes of space-related vision loss were
analyzed. The similarity of space vision issues to a pair of terrestrial maladies was
recognized. The magnitude of the space vision degradation problem was quantified, and
the question of whether or not this damage is permanent was addressed. It was
documented that many spacefarer vision problems occur after astronauts return to Earth.
A one-month threshold for space-induced eye issues was documented. NASA interest in
this issue was discussed as were NASA policy acts regarding vision degradation.
Studies on vision changes in microgravity were considered.
Keywords: Aerospace Daily & Defense Report, cataract, cataractogenesis, CBC
News, Center for Radiological Research, cerebral artery, Columbia University,
folic acid, hypoxia, hypothermia, intracranial hypertension, linear, optic nerve,
National Biochemistry Lab, Orlando Sentinel, oxidative stress, papilledema,
Russian Institute of Medical and Biological Studies, University of Texas Medical
School.
