Spaceflight associated neuro-ocular syndrome (SANS): an update on potential microgravity-based pathophysiology and...

Area of Science:

• Space medicine
• Neuroscience
• Ophthalmology

Background:

• Long-duration spaceflight poses risks to astronaut health.
• Spaceflight Associated Neuro-ocular Syndrome (SANS) involves neurological and visual changes.
• SANS is a significant concern for future human space exploration.

Purpose of the Study:

• To review the current understanding of SANS.
• To discuss hypotheses regarding SANS pathogenesis.
• To describe terrestrial analogues and countermeasures for SANS.

Main Methods:

• Literature review of SANS research.
• Analysis of documented clinical and imaging findings.
• Examination of proposed etiological hypotheses.
• Evaluation of terrestrial analogues and countermeasures.

Main Results:

• SANS is a documented risk associated with microgravity.
• The exact cause of SANS remains unclear, with multiple hypotheses proposed.
• Terrestrial models and countermeasures are under investigation.

Conclusions:

• Further research is needed to understand SANS pathogenesis.
• Development of effective countermeasures is crucial for astronaut health.
• SANS requires continued study to ensure safe human space exploration.