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00140_Field_140.txt
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1997-10-28
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ALCON HAND HELD AUTO-KERATOMETER
Print out
The following information is given on the print out:
K1 -Dioptric value of the meridian
closest to 180 and the axis
K2 -Dioptric value of the meridian
closest to 90 and the axis
Delta K -difference in two readings
and axis
(corneal astigmatism)
Reference -Ground means the
readings were taken
with the patient upright
-Handle means the handle
was tilted more than 15 degrees from vertical and
corrected for or the instrument was manually set to
correct for any tilt.
Base 1 and Base 2 -conversion of the dioptric values to millimeters of radius.