Central corneal thickness and axial length in an adult Nigerian population

Abstract

PurposeThe aim of this study was to determine the relationship between central corneal thickness (CCT) and axial length (AL) in adult Nigerians. MethodsA total of ninety-five (n=95) subjects aged between 20 and 69 years consisting of 56 males and 39 females were recruited for this study. The CCT was measured by ultrasound pachymetry using SW-1000P ultrasound pachymeter (Tianjin Suowei Electronics Technologies LTD, China) and the axial length by A-Scan ultrasonography using I-2100 A Scan Biometer (Cima Technology Inc., USA). ResultsThe average CCT and AL were 547.0±29.5μm and 23.5±0.70mm, respectively. Age inversely correlated with CCT (r=−0.32, p=0.02), but had no effect on AL (r=0.082, p=0.43). The association between CCT and AL showed an inverse trend but was not statistically significant (r=−0.10, p=0.32). Neither CCT nor AL was affected by gender (p=0.11; p=0.63, respectively). ConclusionCCT decreases with age, but AL was not affected by age. The association between CCT and AL was not significant. Gender did not show any statistically significant effect on CCT and AL.