Purpose: The aim of this study was to describe the distribution of central corneal thickness (CCT) in healthy Guinean populations and to determine correlations with age, sex, axial length and refraction.

Methods: We conducted an observational study on 225 eyes of healthy Guinean patients. All patients underwent a complete ophthalmological examination and measurement of CCT by anterior segment optical coherence tomography (DRI TRITON OCT). Axial length (AL) was determined by A-mode ultrasound (NIDEK- US-4000, Tokyo, Japan).

Results: In all, 225 eyes were examined. Central corneal thickness was 508 μm (ranging from 419 to 599μm). There was no statistically significant correlation between central corneal thickness and age, sex, axial length and refractive error.

Conclusions: CCT in the healthy Guinean population was found to be lower compared with CCT values in other parts of the world. Adjustment of IOP values by a correction factor appears necessary for many Guinean patients. These results still need to be confirmed by larger-scale multicenter studies.