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00173_Field_173.txt
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1997-10-28
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KERATOMETER MEASURING TECHNIQUE
Making the Measurement
Once the mires are properly set, the
dioptric power (and/or radii) of the
cornea can be read from the
power drums. The axes are read from
the scale on the body of the instrument
beyond the power drums.
The power in each meridian should be
read to the nearest 0.12 D. and axis
to the nearest 1 degree.
The photograph shows a horizontal
power of 43.00 D. at 15 degrees.