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Ophthalmic
Biometry is performed prior to cataract surgery with Intraocular
Lens (IOL) implantation to determine the measurements needed
to calculate the correct power of the lenses to be implanted
during cataract surgery.
A-scan Ultrasound Ophthalmic Biometry - This method is utilized
to measure the axial length of the eye. An ultrasound beam
is employed to generate echo patterns of the interior tissues
of the eye. The data from these tests are stored in a computer
or transferred for immediate use for Intraocular lens power
calculations for implantation during cataract surgery.
A Keratometer is a device that allows measurement of the corneal
curvature. Keratometry is essential in the fitting of contact
lenses, evaluating and following patients with Keratoconus,
and in the determination of appropriate intraocular
lens implant power for patients undergoing cataract surgery
Using the axial length & Keratometry readings & appropriate
formulas, the power of the Intraocular lens to be inserted
in the eye is calculated.
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