Keratoconus staging by decades: a baseline ABCD classification of 1000 patients in the Homburg Keratoconus Center.
Elias FlockerziKassandra XanthopoulouSusanne Christiane GoebelsElena ZemovaSonia RazafiminoLoïc HamonTheresia JullienUlrike KlühspiesTimo EppigAchim LangenbucherBerthold SeitzPublished in: The British journal of ophthalmology (2020)
The stage distributions in all age groups were similar. Early KC rather becomes manifest in the posterior than the anterior corneal curvature whereas advanced stages of posterior corneal curvature coincide with early and advanced stages of anterior corneal curvature. Thus, this study emphasises the necessity of posterior corneal surface assessment in KC as enabled by the ABCD grading system.