On the possibility of phosphenes being generated by the energetic radiation from lightning flashes and thunderstorms

► Radiation in space consists of X-rays, γ-rays, protons, neutrons and electrons. ► Studies of NASA confirm creation of phosphene in humans by such energetic radiation. ► Energetic radiation also exists in the vicinity of thunderstorms and lightning. ► It is shown that this radiation is strong enough to generate phosphene in humans. ► Some of these visual experiences could be misinterpreted as ball lightning.