International Journal of Keratoconus and Ectatic Corneal Diseases

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VOLUME 7 , ISSUE 1 ( 2018 ) > List of Articles


Revising the Question of Keratoconus Classification

Svetlana Izmaylova, Olga Komarova, Aleksandr Semykin, Maria Konovalova, Marina Zimina

Keywords : Cross-linking, Implantation of toric intraocular lenses, Intrastromal corneal ring segments, Keratoconus, Keratoconus classification, Keratoplasty.

Citation Information : Izmaylova S, Komarova O, Semykin A, Konovalova M, Zimina M. Revising the Question of Keratoconus Classification. Int J Kerat Ect Cor Dis 2018; 7 (1):82-89.

DOI: 10.5005/jp-journals-10025-1162

License: CC BY-SA 3.0

Published Online: 01-09-2010

Copyright Statement:  Copyright © 2018; The Author(s).


Aim: To develop a new surgical keratectasia classification. Materials and methods: We did analysis of existing variants of classification of keratectasia, discussion of newly appeared classifications. We discussed advantages and disadvantages of the presented information. We also discussed the decision of a question on creation of the optimum approach to surgical treatment of patients depending on a kind and a stage of keratectasia. Results: Keratectasias were classified according to the presence of the ectatic process progression (progressive and stable); type of ectasia (primary and secondary); ectasia symmetry (symmetrical and nonsymmetrical); stages (0, I, II, III and IV). The following are recommended for each stage: Subclinical stage 0: Observation and check-up every 6 months; stage I: Ultraviolet (UV) cross-linking; stage II: Intracorneal ring segments (ICRS) implantation, UV cross-linking only if residual ametropia correction by photorefractive keratectomy (PRK) or toric intraocular lenses (TIOL) implantation is planned; stage III: Deep anterior lamellar keratoplasty (DALK); stage IV: penetrating keratoplasty (PK). Conclusion: The presented keratectasia classification is based on modern diagnostic methods; it allows to determine the tactic of surgical treatment, depending on the type and stage of the pathological process. Clinical significance: Our classification helps doctors to easily put the stage of keratoconus process and decide on the following surgical treatment.

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