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.

KEYWORDS:A cross-sectional prevalent study of refractive errors conducted in Warri, a metropolitan town in delta state of Nigeria revealed peculiar prevalent rates. One thousand and eighteen eyes of 6 to 64 year olds were screened for refractive anomalies and 752 (73.9%) eyes (369 male and 383 female eyes) were found with refractive errors. The distribution showed that 141 (38.2%) female eyes and 141 (36.8%) female eyes were myopic and 242 (63.2%) female eyes and 228 (61.8%) male eyes were hyperopic. Hyperopic was found to increase with age in both sexes. While myopia increased with age initially but decreased later at older age groups. Hyperopia and myopia were statistically not independent of age (P>0.01). Presbyopia was observed in 271 (36.0%) eyes out of which 173 (63.8%) were male eyes and 98 (36.2%) female eyes. Of the presbyopic eyes, 35 (20.2%) were found in the age group 25-34 years comprising 14 female and 21 male eyes. About 75% of those with refractive errors fell within ±0.25D to ±1.00D error range. The prevalence of error found in this study, indicates the need to upgrade the visual health services offered in Warri, in order to cope with higher demands expected from WHO vision 2020 programme.