ABCD: A new classification for keratoconus

Michael W. Belin, Gairik Kundu, Naren Shetty, Krati Gupta, Ritika Mullick, Prashansa Thakur

Research output: Contribution to journalArticlepeer-review

26 Scopus citations


Recent advances in the diagnosis and treatment of ectatic corneal disease have mandated a more modern staging system. The new Belin ABCD keratoconus staging system incorporates anterior and posterior curvature centered on the thinnest point of the cornea, thinnest pachymetry values and distance visual acuity in grades from 0-4. By including posterior curvature and thickness measurements based on the thinnest point, as opposed to apical, the new staging system better reflects anatomical changes seen in keratoconus and other ectatic diseases.

Original languageEnglish (US)
Pages (from-to)2831-2834
Number of pages4
JournalIndian Journal of Ophthalmology
Issue number12
StatePublished - Dec 2020


  • ABCD
  • classification
  • ectasia
  • keratoconus

ASJC Scopus subject areas

  • Ophthalmology


Dive into the research topics of 'ABCD: A new classification for keratoconus'. Together they form a unique fingerprint.

Cite this