wae,
monkeys exposed to the flash of this shot.
Lesions resulted at all
stations. - Calculated caloric yields at the exposure sites ranged
+von Anais inversely corresponding to distances of 2.7
to 8.1 statue niles.
Blink Reflex Studies
Blink reflex exposures produced chorioretinal damage in 21 of 38
rabbits and 6 of 8 monkeys.
Evaluation of blink reflex time (in this
case, the time and duration of eye exposure) awaits appraisal of the
high speed photography of the animal eyes during the explosion,
laboratory studies using increasingly powerful photoflash bulbs
reveals a relatively constant blink reflex time of approximately 320
ms for rabbits and monkeys and about 160 ms for man.
Using similar
blink reflex times and recognizing the twofold greater relative opening
of the rabbit pupil, earlier investigations estimated that the rabbit
is susceptible to retinal burns at distances about 25 percent greater
than those equally harmful to man.
By analogy therefore, the pro-
duction of burns at 8.1 statue miles extrapolates to 6.5 miles for man.
As evidenced by the data it was noted that smaller (and apparently
less severe) lesions were encountered at increasing distances from the
fireball,
Details of burn pathology must await laboratory study which
cannot be accomplished at the Pacific Proving Grounds. It is of interest
to observe that retinal hemorrhaging in this exposure series was
associated with what appears to be lesions of intermediate severity.
This is in contrast to the findings of previous investigators who noted
hemorrhaging in connection with the most severe burns.
It may be that
additional information on the incidence of this reaction and/or other
S
ENLE
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