ae a Project 4.1 - Flash Blindness - Chorioretinal Burn: - Col. B.S. Fixoctt ORIRCIIYES The primary objective of thie project is to obtain information on the requirements for protection of the eyes against chorioretinal burns from atomic detonations of various yielde; ip this case, a veepon a” si _ Cerollary technical objectives at the same yield are to: Determine whether blink reflexes vill prevent chorio-etine) burns, Aseartain which portions of the time-intensity pulse aan produce thermal injury to the retina end choroid of the eye. Determine the time required for blink reflex (BRT) in rebbits end ponkeys exposed to the extreme light intensity of the atomic detonation. Explore the feasibility of ocular protection by means of fixed density optical Milters and/or combinations of filters. Test, under field conditions, protective abutter devices vhich ere ip the developmental stage and vhich are designed to close much sore repidly - MeBEST AVAILASLE COBY TESTEREETATIION The basic instrumentation for this shot was identical to thet used for previous shots. In addition inetrumentatios on loan from Project 2.65 (Aray Chemical Center) was employed for measuring the therm) rediation dosage Peosived at exposure sites on Japtan (David) and Runit (Yvonne), ‘This instrument gives no informatior on pulse shape. BESULIS COPIEDDOE Observations SANDIA RC Chorioretinal burns were produced in 19 of 92 rabbits and 8 of & moakeys participating in this shot. All of the burns vere produced at the Runit site. - We wa BB