What is a Keratometer ? | 合法醫療器材資訊網

Akeratometer(sometimesreferredtoasanophthalmometer)isadeviceusedformeasuringthecurvatureofthecornea'sfrontalsurface.In1851,German ...

Keratometers are essential instruments used in ophthalmology to measure the curvature of the cornea, which is a crucial factor in determining the refractive power of the eye. The two important types of keratometers are manual keratometers and automated keratometers. Manual keratometers use movable mires or prisms to assess corneal curvature, while automated keratometers employ photosensors to measure the same. Both types provide valuable data, such as the flat and steep meridians of the cornea, the keratometric difference, and additional measurements like the axis of astigmatism and corneal thickness. Understanding the proper steps to use these instruments is crucial for accurate and reliable keratometry measurements.

Manual keratometers, also known as manual ophthalmometers, operate on the principle of reflection. They use a series of movable mires or prisms to assess the cur...