# New Quantum Tech Aims to Prevent Vision Loss in Space European Space Agency backs compact eye-scanning device for long-duration missions. - **Source:** [Science Latest](https://brifing.si/source/ebc20f22-8d1a-4ae4-ba4c-efcd0853ba19) - **Published:** 2026-08-10 - **Topic:** [Business](https://brifing.si/c/business) - **Original article:** - **On Brifing:** https://brifing.si/s/b7e45007-0061-41f1-bdcb-8502bf6481d8 ## The Challenge of Space-Induced Vision Loss Approximately 70% of astronauts develop Spaceflight-Associated Neuro-Ocular Syndrome (SANS) during extended missions. This condition occurs when microgravity causes fluid buildup in the head, compressing eyeballs and swelling optic nerves. NASA astronaut John Phillips' vision deteriorated from 20/20 to 20/100 during his 2005 ISS mission. With upcoming lunar and Martian expeditions, this poses significant operational and health risks that space agencies are racing to address before Artemis missions commence. ## ESA's Quantum Solution The European Space Agency has partnered with UK startup Siloton to develop miniature eye-scanning technology using quantum photonic chips smaller than coins. These devices aim to monitor astronauts' retinal health autonomously during deep-space missions. Current bulky equipment requires real-time guidance from Earth - impossible with communication delays during lunar or Martian expeditions. ESA emphasizes that vision impairment during missions creates both immediate operational hazards and long-term health consequences for space explorers. ## Siloton's Dual-Purpose Innovation Founded in 2020 by physicists, Siloton initially developed its quantum eye-scanning technology for NHS patients with retinal conditions. CTO Euan Allen notes the parallel requirements between elderly patients and astronauts, despite vastly different environments. The startup's photonic chip shrinks optometrist-grade diagnostic equipment into portable devices, potentially benefiting both space medicine and terrestrial healthcare through this unusual technology crossover. ## Technical Hurdles in Space Medicine Designing medical equipment for space presents unique challenges: batteries pose fire risks, interior space is limited, and microgravity complicates patient positioning. Siloton must adapt its binocular-sized scanner for spacecraft integration without traditional chin rests. However, the team finds working with astronauts easier than elderly patients - astronauts' younger age, full visual acuity, and training enable better compliance during examinations in weightless conditions. ## Earth Applications Siloton anticipates its space research will improve terrestrial medical devices for the NHS. The bidirectional technology transfer could enhance home-based eye monitoring for millions with retinal diseases. Allen emphasizes how solving extreme space medicine challenges often yields innovations with widespread earthly applications. This synergy between space and medical technology exemplifies how space exploration drives advancements benefiting life on Earth. ## Long-Term Implications While some astronauts' vision partially recovers post-mission, NASA data shows potential for permanent damage - a critical concern for establishing lunar bases or Martian colonies. UK Space Agency director Rebecca Evernden identifies SANS as a top health priority for long-duration missions. Early detection systems being developed could prevent career-ending vision loss and ensure astronaut safety during humanity's expansion into the solar system. ## The Future of Space Healthcare Siloton's work represents a paradigm shift in space medicine, where compact quantum devices may replace bulky traditional equipment. This innovation addresses immediate astronaut health needs while demonstrating how space research accelerates medical technology. The project underscores that solutions developed for extreme environments often yield disproportionate benefits for conventional healthcare, blurring boundaries between space exploration and terrestrial medical progress. ## A Model for Space-Earth Collaboration The ESA-Siloton partnership exemplifies effective technology transfer between space agencies and private innovators. By simultaneously serving astronauts and NHS patients, this quantum eye scanner demonstrates how space research investments can deliver dual returns. As humanity prepares for interplanetary travel, such collaborative models will prove essential for developing the medical infrastructure required to sustain life beyond Earth while improving healthcare standards worldwide. ## Sources covering this story - https://www.wired.com/story/space-agencies-trying-stop-astronauts-losing-sight/ — --- _Summary written by Brifing from the original reporting. Copyright in the original article belongs to its publisher; read the full piece at the link above._