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Keratom.DIr
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00221_Field_221.txt
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1997-10-29
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ALCON HAND HELD AUTO-KERATOMETER
Controls
2. Handle or Ground reference setting. If set
to ground it will automatically compensate for
the axis measurement if you turn the handle
away from vertical. For example if you are
doing keratometry on a bedridden patient.
3. The setting can be set to read
either - cylinder or + cylinder.