Posters

The influence of tomographic corneal characteristics on the epithelial and stromal thickness profiles

Poster Details

First Author: N.Hashmani PAKISTAN

Co Author(s):    S. Hashmani                    

Abstract Details

Purpose:

To evaluate the effect of various corneal tomographic parameters, like corneal asphericity, on the thickness profiles of the epithelium and stroma.

Setting:

This study took place at Hashmanis Hospital, Karachi, Pakistan.

Methods:

This was a cross-sectional study performed in 98 eyes of 49 patients. All patients underwent a range of ophthalmologic tests including the Avanti RTvue XR (Optovue, Inc., Fremont, CA, USA) and the Oculus Pentacam HR (Oculus, Wetzlar, Germany). All patients were screened for ocular diseases and only normal eyes were included in the final analysis. We looked at the correlations of the sectorial epithelial and stromal thickness profiles with the K1, K2, Km, Kmax, astigmatism, KP(0), KP(45), and corneal asphericity (Q value) in both the front and back of the cornea. We also looked at the corneal volume.

Results:

The stroma showed moderately negative correlations to the K2, Km, and Kmax. When looking at the Q value, the front corneal asphericity showed statistically significant moderately positive correlations with the stromal thickness profiles and the back surface showed significant moderately negative correlations to the epithelial thickness. The corneal volume showed strong positive correlations to the stromal thickness profiles in all sectors.

Conclusions:

We found certain tomographic parameters to be related to individual stromal and epithelial thicknesses. This will be important in understanding how the normal cornea behaves.

Financial Disclosure:

None