Relationship between central corneal thickness and axial eye length using partial coherence interferometry

Abstract

Background and aim Several studies have shown the relationship between axial length (AL) of the eye and central corneal thickness (CCT). Since genetics, ethnicity, and race can affect these factors, their differences between different societies can probably explain refractive error variance. We present the ocular parameter values in 154 eyes of different refractive error groups to investigate the correlation between AL of the eye and CCT in Egyptians with refractive errors. Patients and methods In all, 154 patients were classified into emmetropic, hypermetropic, simple myopic, congenital myopic, and malignant myopic groups. Most ocular parameters were achieved using IOLMaster 700 and stratified according to AL and CCT. Results The CCT means in the studied groups was 537±34, 523±31, 541±40, 524±40, and 524±27 μm in emmetropic, hypermetropic, simple myopic, congenital myopic, and malignant myopic groups, respectively. The AL was 23±0.76, 22±1.1, 25±1.3, 26±1.4, and 29±1.6 mm, respectively. Regarding the correlation between AL of the eye and CCT (r=−0.01, P=0.92, confidence interval=−0.17 to 0.15). Conclusion This study provided valued measurements of ocular parameters of the Egyptians with refractive errors. Besides, there is no significant correlation between AL of the eye and its CCT in Egyptians with errors of refraction.

Keywords

• axial length
• central corneal thickness
• iolmaster 700