What unit is used to express the results of keratometry?

Prepare for the JCAT Independent Practice Exam! Study with flashcards and multiple choice questions, each with hints and explanations. Get ready for your exam!

Keratometry is a procedure used to measure the curvature of the anterior surface of the cornea, which plays an essential role in determining the eye's overall optical quality and the fitting of contact lenses. The results of keratometry are expressed in diopters, which is a unit of measurement that indicates the optical power of a lens. When light passes through a lens, its curvature affects how much the light is bent, and this bending is quantified in diopters, where one diopter corresponds to the focal length of one meter.

The use of diopters reflects the relationship between the curvature of the cornea and its refractive power, making it the most relevant unit in the context of keratometry. Understanding this is crucial for optometrists and ophthalmologists when diagnosing vision conditions and determining appropriate corrections for patients.

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