(Dartmouth-Hitchcock Medical Center) People have long reported seeing flashes of light during brain radiotherapy. Until now, no one has been able to capture evidence of this sensation in humans, and only theory, models, and speculation exist to explain it. Scientists at Dartmouth’s Norris Cotton Cancer Center, for the first time, have not only caught real-time observation of this phenomenon, but explain how the light is produced in the eye when radiation passes through it.

Original source: https://www.eurekalert.org/pub_releases/2020-01/dmc-scf010720.php