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00130_Field_130.txt
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1997-10-29
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441b
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21 lines
ALCON HAND HELD AUTO-KERATOMETER
How it works
PatientΓÇÖs View:
From the patient side of the
instrument you will see a ring
of green lights, a central
viewport, and four projectors.
The outer ring of green lights
are reflected off the cornea so
the operator can visually
inspect the cornea and detect
distortion or large amounts of
astigmatism. They are not used
in the actual measurement.