DEAR(Sanitized)

• Document Type: CREST
• Collection: NGA Records (Formerly NIMA)
• Document Number (FOIA) /ESDN (CREST): CIA-RDP78B05171A000600070025-0
• Release Decision: RIPPUB
• Original Classification: K
• Document Page Count: 4
• Document Creation Date: December 28, 2016
• Document Release Date: April 4, 2003
• Sequence Number: 25
• Publication Date: May 7, 1969
• Content Type: LETTER

Approved For Release 2003/05/14: CIA-RDP78BO5171A000600070025-0
Approved For Release 2003/05/14: CIA-RDP78BO5171A000600070025-0
 Approved Fg,&Release 2003/05/14: CIA-RDP78B051 -000600A7b025P-0
STAT
Memorandum for the record
Progress Report
edLR i I` ~j '~s qcq
tl.^~
The zoom 70 has been received and has been coupled with the laser
measurement device by means of a microscope cover, glass Inserted in a
specially constructed eye piece. It appears as if the system will work
extremely well. The subject sees the laser pattern superimposed on the
field of the microscope and can readily discern movement of the pattern
with this arrangement. At present, we are mounting the drum assembly
from which the laser pattern is reflected on an electrically driven optical
bench, The subject can null the pattern motion by appropiately positioning
the optical bench.
I am enclosing a translation of an article by Yves LeGrand on negative
accommoVdation. This article suggests that maximum relaxation of the
tense is not attained simply by looking at a distant object, but that
by means of a supplementary effort, additional flattening of the lensa
can be achieved by at least some of his subjects. I should add that
recent experiments in our laboratory on the effect of hypnosis on Improvement
of acuity In myopes have been positive. Subjects were told to relax the
muscles around their eyes since that this was known to improve their
acuity. A non-hypnotized control group consisting of suggestible subjects
produce the same results, while the same Instructions had no effect on
a second non-suggestible control group. Whether these changes are due
to a change in refractive power can be determined by means of the laser
technique,
STAT
Assuming that the laser technique works according to our present ex-
pectations, it might be desirable to combine this method with the proposed
STAT experiments at pointed out that the reaction time for a
change in accommondation seems to be fairly consistent at 0.4 second.
Although we are not certain at this point, it may be that recogMition
of the movement of the scintillation pattern may take a longer time.
This suggests that it would be advisable to superimpose the laser pattern
in the subjects field of view while simultaneously recording changes in
STAT his accommodation states with the= device. This could easily be
accomplished during the proposed experiments at 0 and would serve to
validate the laser method.
STAT
Approved For Release 2003/05/14: CIA-RDP78BO5171A000600070025-0
 Approved For.Release 2003/05/14: CIA-RDP78B051 X000600070025-0
STAT
STAT
Memorandum for the record
21 April 1969
STAT i Informed of a conversation I had with regarding STAT
STAT the present status of the 0 contract and the proposed arrangement with him.
He indicated his continuing interest in the project and desire to participate
STAT in the 0 studies. However, he does have a time limitation problem this
summer. During the first three weeks of July, he conducts an intensive course
in refraction which completely utilizes his available time. He will be available,
however, during the last week of June or the end of July.
STAT
STAT
He reiterated the advisability of making contact with STAT
STAT
He pointed out that II was one of the most outstanding students to graduate
from Washington University and Is particulary interested in microscope re-
search. At his suggestion, I plan to contact In.the near future. STAT
We also discussed the development of the laser scintillation technique
STAT for determining refractive status. 0 feels that this method will
In the long run prove superior to the Infrared technique. This prediction
Is based on the fact that the laser method can be superimposed on the PI's
task at irregular and unexpected intervals thereby sampling his accommodative
state during a working situation.
He suggested that the AC/C ratio be determinded for each subject
and predicted that those with either high or low ratios would have the
most difficulty using the binocular microscope. He also suggested that
varing amounts of divergence and convergence be Imposed upon the operators
as part of the experiment. He suggested that the rod be used to STAT
evaluate the phorlas of these observers.
We plan to continue with the application of the laser method to the
zoom 70 microscope. If in fact the instal results confirmed to our
expectations, the subsequent experiments will be planned with STAT
advice.
Approved For Release 2003/05/14: CIA-RDP78BO5171A000600070025-0
 STAT
STAT
STAT
STAT
Approved F? Release 2003/05/14: CIA-RDP78B05 A00060?D 10 25 10 19 6 9
Memorandum for the reocrd
during the Sarasota meetings.
At the moment, he Is particularly Interested In the evaluation
of night vision devices. One of the serious problems that he has encountered
is responsible for our Initial contact wit which
subsequently led to our interaction wit
with this device Is that of Instrument and/or night myopia.
STAT I has thought about and worked on the periphery of this problem
for many years, not only with respect to night vision devices, but also
with respect to tank drivers. He is quite interested in our work and asked
STAT If he could visit sometime in the summer or fall. It would
also be desirable, I feel, for sponsor's representatives to visit the
STAT sometime after Harker returns from hit current
leave of absence which terminates at the and of June 1969.
Approved For Release 2003/05/14: CIA-RDP78B05171A000600070025-0