What is the name for the instrument that measures the curvature of the central part of the cornea?

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The instrument used to measure the curvature of the central part of the cornea is called a keratometer. This device is specifically designed to evaluate the shape and curvature of the cornea, which is crucial for assessing various refractive conditions, planning for surgeries such as LASIK, and fitting contact lenses. The keratometer provides measurements that help eye care professionals understand corneal topography and determine the appropriate corrective measures needed for patients.

In contrast, a tonometer measures the intraocular pressure of the eye, which is crucial for diagnosing glaucoma, while a pachymeter measures the thickness of the cornea itself. A lensmeter is used for determining the prescription of eyeglass lenses. Each of these instruments serves a distinct purpose within the field of optometry and ophthalmology, highlighting the keratometer's specialized function in assessing corneal curvature.

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