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Keratom.DIr
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00223_Field_223.txt
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1997-10-29
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262b
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13 lines
ALCON HAND HELD AUTO-KERATOMETER
Measuring Technique
Before using the instrument
focus the eyepiece by focusing
on an object at a distance of
about 3 inches and turning the
focus ring on the eyepiece until
the image is in focus.