Simplified Nomenclature for describing Keratoconus

Abstract

Keratoconus is a condition that has been described since the 1850s. It is typically defined as a bilateral, progressive, noninflammatory thinning and steepening disorder of the central or paracentral cornea. In its advanced form, diagnosis is rather straightforward. It is the subtler manifestations of keratoconus that impart a diagnostic challenge. With the advent of newer diagnostic equipment and the parameters that are now measurable, there is an opportunity to update our current classifications and definitions of keratoconus. The purpose of our paper is to propose and define terminology that reflects both our current knowledge and new data from diagnostic tests.