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ANSI Z80.23-2018 (R2023)

Ophthalmics – Corneal Topography and Tomography Systems – Standard Terminology, Requirements

This American National Standard applies to instruments, systems and methods that are intended to measure the shape of the cornea of the human eye over a majority of its area. The measurements of the anterior and/or posterior surface in local areas may be of curvature and/or three dimensional topographical measurements of the surface. The measurements may be used to derive more global parameters used to characterize the surfaces. Instruments classified as ophthalmometers or keratometers are not covered by this standard.

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