Correlation of corneal elevation and difference elevation as measured by Scheimpflug corneal imaging with severity of keratoconus

Session Details

Session Title: Imaging

Session Date/Time: Tuesday 16/09/2014 | 08:00-10:30

Paper Time: 08:18

Venue: Capital Hall B

First Author: : R.Soltani Moghadam IRAN

Co Author(s): :    M. Mohamadi   S. Soltanipour   H. Veisi        

Abstract Details

Purpose:

To evaluate the correlation of corneal elevation and difference elevation with severity of keratoconus

Setting:

Eye research center, Guilan University of Medical Sciences, Rasht, Iran

Methods:

90 eyes of 55 keratoconus patients of different clinical stages were evaluated. Anterior and posterior corneal elevations with both conventional and enhanced best-fit spheres (using rotating Scheimpflug camera) were measured. Front and back difference elevation were extrapolated from difference map of Belin-Ambrosio enhanced ectasia display of the Scheimpflug system. Data from corneal elevations and difference elevations were correlated with maximum keratometry , minimal corneal thickness and severity of keratoconus as assessed by Amsler-Krumiech classification of keratoconus

Results:

There was a significant positive correlation between keratoconus severity and corneal elevations (anterior and posterior elevation as measured with both conventional and enhanced best-fit spheres) and also between keratoconus severity and corneal elevation differences (P = .000 and r > .680 for all). Maximum keratometry (K max), Mean keratometry (K m) and all corneal elevations and difference elevations were highly correlated (P = .000 and r > .840 for all). A significant negative correlation was found between minimum corneal thickness and all corneal elevations and difference elevations (P = .000 and r < -.711 for all)

Conclusions:

Evaluation of corneal elevation and and difference elevation data obtained from Scheimpflug corneal imaging is useful for grading severity of keratoconus

Financial Interest:

NONE