Crew Conducts Futuristic Workouts, Advanced Eye Exams During Spacewalk PrepsESA astronaut Sophie Adenot shows off an Optical Coherence Tomography machine, a medical imaging device used for eye exams. ESA/Sophie AdenotFuturistic workouts, eye exams, and virtual reality led the research schedule for the Expedition 75 crew aboard the International Space Station on Wednesday. Fluids also rise toward a crew member’s head in microgravity creating pressure on the back of the eye potentially affecting vision. Earlier, she took turns with NASA flight engineer Anil Menon and practicing their spacewalk procedures on a computer using 3D interactive animation software. Dubrov partnered with Roscosmos flight engineer Anna Kikina and began their shift together testing the performance of life support hardware inside the Zarya module.