The X Ray and Radium Phosphenes

EFFECTS OF RADIATION ON THE BEHAVIOR OF ANIMALS: A REVIEW OF THE LITERATURE. Appendix to 1972 Progress Report.

“…Euglena were shown to move toward a source of beta and gamma rays (Bowne and Mcgough, 1966). Positively phototropic insects and crustaceans also move toward an ionizing radiation source, except when they are blinded (review by Lipetz, 1955). Gamma radiation was found to influence the degree of turning, the activity, the phototactic responses and the lunar rhythms of Drosophila melanogaster (Picton, 1964).…”

Clinical Evaluation of the Intraocular Pressure in Patients with Glaucoma or Ocular Hypertension by a Self-Assessable Tonometer

“…Phosphene, from the Greek word meaning "to show a light," is the sensation of light elicited by nonphotic stimuli. A phosphene (an entopic phenomenon that can be induced with pressure or electrical field) is thought to be the result of bipolar and photoreceptor cell stimulation (3,4). The application of pressure through the closed eyelid on the superior nasal portion of eye will give rise to the perception of a pressure phosphene.…”

Experimentally Observed Cherenkov Light Generation in the Eye During Radiation Therapy

“…8 Detailed reviews of the mechanisms underlying radiation therapyeinduced phosphenes have been reported. [9][10][11] Specifically, it has been stated that Cherenkov light generation in the eye is the dominant mechanism responsible for perceived phosphenes during electron and photon radiation therapy. 9,12,13 Despite this diversity of possible causes, there has been little direct mechanistic measurement of this phenomenon.…”