Posters

Topometric and tomographic evaluation of subclinical keratoconus

Poster Details

First Author: K.Ozulken TURKEY

Co Author(s): M. Koc   K. Tekin   M. Tekin              

Abstract Details

Purpose:

To investigate the corneal topometric and tomographic findings of subclinical keratoconus.

Setting:

1. Ulucanlar Eye Research and Training Hospital 2. Tobb Etu Medical School

Methods:

The study group was selected from patients with clinically evident keratoconus in one eye and subclinical keratoconus without evident topographic findings in fellow eye. The control group was selected from candidates for contact lens use. The topometric and tomographic parameters were evaluated via the Pentacam HR (Oculus, Germany).

Results:

The study group consisted of 151 patients (69 male and 82 female, mean age 24.8 ± 7.2 years) and the control group also consisted of 150 patients (70 male, 80 female, mean age 26.0 ± 6.3 years). There were statistically significant differences in all measured topometric (p˂0.05) and tomographic (p˂0.001) parameters between the eyes with subclinical keratoconus and those of the control group. In discriminating eyes with subclinical keratoconus from normal eyes, final D showed the highest area under curve value (0.858), followed by maximum pachymetric progression index (0.809) and average pachymetric progression index (0.796) in receiver operating characteristic analysis.

Conclusions:

Topometric and tomographic parameters might be useful for early detection of keratoconus, but the sensitivity and specificity of each are not high enough to be used alone.

Financial Disclosure:

None