NASA astronaut Jessica Meir, expedition commander, demonstrated the use of virtual reality glasses known as the Nevada Screening Vision System. The device is used to conduct a test that measures various parameters of astronauts' visual function. In particular, the system tests visual acuity, contrast sensitivity, and other indicators using a series of specialized vision screening applications. Such technologies are important for monitoring the health status of cosmonauts during long-duration space missions, as microgravity conditions can affect the human visual system. Regular checks using such innovative devices allow NASA specialists to timely identify possible changes in astronauts' vision and develop measures to prevent or correct them.