<p>This document specifies minimum requirements for instruments and systems that fall into the class of corneal topographers (CTs). It also specifies tests and procedures to verify that a system or instrument complies with this document and thus qualifies as a CT according to this document. It also specifies tests and procedures that allow the verification of capabilities of systems that are beyond the minimum requirements for CTs.</p>
<p>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.</p>
<p>This document is applicable to instruments, systems and methods that are intended to measure the surface shape of the cornea of the human eye.</p>
<p>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.</p>
<p>This document is not applicable to ophthalmic instruments classified as ophthalmometers.</p>
Registration number (WIID)
91731
Scope
<p>This document specifies minimum requirements for instruments and systems that fall into the class of corneal topographers (CTs). It also specifies tests and procedures to verify that a system or instrument complies with this document and thus qualifies as a CT according to this document. It also specifies tests and procedures that allow the verification of capabilities of systems that are beyond the minimum requirements for CTs.</p>
<p>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.</p>
<p>This document is applicable to instruments, systems and methods that are intended to measure the surface shape of the cornea of the human eye.</p>
<p>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.</p>
<p>This document is not applicable to ophthalmic instruments classified as ophthalmometers.</p>
