Posters

Topographic versus structural classification of keratoconus: points of agreement and disagreement

Poster Details

First Author: C.Khodriss MOROCCO

Co Author(s):    S. Benmlih   A. Bennis   F. Chraibi   M. Abdellaoui   I. Benatiya Andaloussi        

Abstract Details

Purpose:

To Compare the structural classification of Sandali and the topographic and aberrometric classifications of keratoconus.

Setting:

Ophtalmology department, Hassan II University Hospital Center (University of Sidi Mohammed Ben Abdellah). FEZ. Morocco.

Methods:

This prospective single-center study included eyes with averaged keratoconus. All patients were staged according to 5 different classifications : kurmeich classification, topographic classification (TKC), Belin ABCD classification, keratoconus severity score (KSS) and aberrometric classification (Alio and Shabayek) . These different grades were then compared to structural classification of sandali. The statistical study is carried out by SPSS software, using the Chi-square test, the value of p <0.05 was considered to be Significant.

Results:

We included 78 eyes from 46 patients. statistical analysis has revealed a significant difference (p <0.008) between tomographic classification and the other classifications. The tomographic classification is in agreement with: the classification of Alio and Shabayek in 30%, the topographic classification in 21%, the severity score (KSS) in 11%, the classification of Krumeich in 35%. Only the posterior radius of corneal curvature of the ABCD classification is associated with the structural classification.

Conclusions:

There have been several attempts to achieve an applicable grading system but no classification is not uniformly accepted, so it is necessary to establish a severity classification which groups together the most most incriminated in the evolution of keratoconus.

Financial Disclosure:

receives non-monetary benefits from a company producing, developing or supplying the product or procedure presented