Comparison of Chinese and North American Tomographic Parameters and the Implications for Refractive Surgery Screening

Purpose: The aim of this study was to determine whether there are significant clinical variations in the Belin/Ambrosio Enhanced Ectasia Display (BAD display) parameters between Chinese and North American eyes and whether any variations are related to differences in corneal diameter. Design: Retrospective observational study. Methods: Files were generated from patients seeking refractive surgical correction. Patients with previous surgery, evidence of corneal ectasia, or scans representing a non-normal cornea were excluded. Unpaired t tests were performed for all variables. Regression analyses were performed for all variables with respect to corneal diameter, and compared to evaluate the influence of corneal diameter between populations. Data were graphed as standard scores (z scores) to compare different parameters. Results: 127 North American and 49 Chinese patients met study criteria. Statistically significant differences existed for corneal diameter (P 
Source: Asia-Pacific Journal of Ophthalmology - Category: Opthalmology Tags: Original Study Source Type: research