What is Keratometry?
Keratometry is an optical procedure/technique to measure the curvature of the cornea. In doing such procedure, the shallowest and steepest curves are seen.
Keratometry may either be manual or automated. In manual keratometry, you’ll be able to have a direct visualization of the reflections produced by the tear film. This is different from automated keratometry. In the latter, the measurements are computer generated; hence, there would be no appreciation of the accuracy of the “measured moment.”
Why is Keratometry Done?
Keratometry is performed for various reasons. Besides measuring the corneal curvature, keratometry is also done to determine the quality of your vision and to detect early signs or presence of astigmatism.
How is Keratometry Done?
The person responsible for doing the test is an ophthalmic laser technologist. Keratometry may take 10 to 15 minutes.
Keratometry is performed with the use of a manual keratometer. The latter is also known as ophthalmometer. It’s a device invented by Hermann von Helmholtz. There are two types of keratometer namely Bausch & Lomb Keratometer and Javal-Schiotz Keratometer. These devices differ in the type of doubling system they use – the first one uses a variable doubling system while the second uses a fixed doubling system.
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