Keratometry 
Keratometry
measures the corneal curvature. It
is performed for similar reasons as topography,
but rather than mapping the entire corneal surface, two curves are measured –
the steepest and the flattest. These
measurements give the doctor information about the cornea’s curvature,
focusing power, and whether astigmatism is present.
Some
of the uses of keratometry include calculating the intraocular lens power for
cataract surgery, fitting contact lenses and monitoring the corneal curvature
after surgery.
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