Short Term Anatomical and Biomechanical Changes of the Eye in Microgravity on Axiom-1 Mission (Sansori Ax-1) assesses eye and vision changes in crew members on the Axiom-1 (Ax-1) private astronaut mission (PAM). Many but not all astronauts experience changes in eye anatomy and visual acuity known as Space Associated Neuro-Ocular Syndrome (SANS), and a better understanding of the condition could support development of countermeasures.