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00166_Field_166.txt
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1997-10-28
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736b
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KERATOMETER MEASURING TECHNIQUE
Aligning the Instrument
Next look through the eyepiece and
sweep the instrument side to side to
find the reflection of the mires from
the cornea and to horizontally align
the instrument. The proper alignment
is when the crosshair is in the center
of the lower-right (center) circle. To
achieve the proper vertical alignment,
use the controls described on the
previous screen.
When this alignment is achieved, lock
the instrument so it will not move up
or down or from side to side (lock
knob on left side).
The movie shows aligning the instrument to take a measurement as previously described as well as showing how to rotate it for axis.