Radicals excess in the retina: A model for light flashes in space |
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| Affiliation: | 1. Department of Physics, University of Rome ‘Tor Vergata’, via della Ricerca Scientifica, 1, 00133, Rome, Italy;2. Department of Biology, University of Rome ‘Tor Vergata’, via della Ricerca Scientifica, 1, 00133, Rome, Italy;3. Department of Chemical Science and Technology, University of Rome ‘Tor Vergata’, via della Ricerca Scientifica, 1, 00133, Rome, Italy;4. INFN Roma ‘Tor Vergata’, Rome, Italy;5. DISM, University of Genova, Genova, Italy;6. Department of Psychiatry, State University of New York, Stony Brooks, NY, USA |
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| Abstract: | The risk due to cosmic radiation is a major issue in planning future missions to the Moon or Mars and would be critical if inadequately addressed. Functional risks must also be considered. The perception of light flashes reported by astronauts in space, and ascribed mostly to the action of ionizing radiation in the eye (retina), is an evidence for radiation functional interaction. No detailed model of the ion/retina interaction is yet available.Here we present the first model for a generation mechanism compatible with light flashes in space, and the results of in vitro tests supporting it. The model can be a common end point for the interactions between ionizing radiation and visual system in space. It would also support the assessment of functional radiation risks in space. |
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