The Relationship between Central Corneal Thickness and Intraocular Pressure in Adult Nigerians without Glaucoma

Abstract

The aim of this study was to investigate the relationship between central corneal thickness (CCT) and intraocular pressure (IOP) in a predominantly black population. A total of eighty-five subjects (right eyes) with mean age 44.7 ± 15.1 years consisting of 49 males and 36 females were recruited for this study. The central corneal thickness was measured by ultrasound pachymetry (SW-1000P pachymeter, Tianjin Suowei Electronic Technology, China) and intraocular pressure with Keeler Pulsair EasyEye Non-contact tonometer (Keeler Instruments, USA). The mean CCT for the studied population was 550.0 ± 36.3µm, while the mean IOP was 15.0 ± 2.6mmHg. Although there was a downward trend in the central corneal thickness towards the older age, the association between CCT and age was significant (r=-0.25, p=0.021). However, the association between intraocular pressure and age was not significant (r=0.091, p=0.41). There was no significant association between CCT and IOP (r=0.052, p=0.64). Neither central corneal thickness nor intraocular pressure was influenced by age. There was no significant association between central corneal thickness and intraocular pressure.