ap
phenomens may be significant in the development of « comprehensive
subjective grading system analogous to that used in the evaluation
of the cutaneous flash burns.
tter
3
Retinal burns were sustaine! ty 10 of 32 rabbits exposed behini
staggered shutters at JAPTAN (DAVID).
According to preselected shutter
timing, two burns were produced during the initial 7-to-19 ms of the
weapon flash,
Beth burns were located centrally in the rabbit eye
anit appeared almost pin-point 11 sise,
These lesions, while definitely
minimal, were neverthelags discernible on a 24 hour re-check when they
were documented by fundue photography.
Since the {Ammer the first minimum is calculated as cecuring
at — it would seem that the burns vere produce! by the energy
of the first pulse alone.
If true, this finding ‘ecomes of interest in
considering the time of closing “or protective shutters.
The low in-
eiitence (12,5 percent) of burns during the first 50 as of the explosion
somewhat minimises the possibility of significant injury produced by
the first pulse.
"
Stagger~i shutter exposu-es to the initial 60-to-25C ms of the
detonation caused bucns in ahout SO percent of animals exposed turing
these intervals.
“yp
The time to *h» second maximum is calculated x
it is apparent that this group of animals were subjecte!, not only to
the energy of the first flash %.* also the greater portion of the second
pulse,
Resolution of actual shutter speet in all cases is contingent
upon appraisal of the high spee! photography accomplished at the time
aesT AVAILABLE COF
ns
of the explosion,
-
16
Y
=
lo F