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Standard Type : Main
Document No : ISO 19980:2021
Document Year : 2021
Pages : 22
Edition : 3
Section Volume : Ophthalmic optics and instruments (ISO/TC 172/SC 7.)
This document defines terms that are specific to the characterization of the corneal shape so that they may be standardized throughout the field of vision care.
This document is applicable to instruments, systems and methods that are intended to measure the surface shape of the cornea of the human eye.
NOTE The measurements can be of the curvature of the surface in local areas, three-dimensional topographical measurements of the surface or other more global parameters used to characterize the surface.
This document is not applicable to ophthalmic instruments classified as ophthalmometers.