Age-related changes in central corneal thickness in normal eyes among the adult Lithuanian population

The purpose of this study was to estimate mean central corneal thickness (CCT) and determine whether there are any correlations between CCT, age, and sex in the adult Lithuanian population. A total of 1,650 Caucasians of Lithuanian origin (aged 18-89 years) comprising 688 (41.7%) men and 962 (58.3%) women were examined. Subjects were stratified by age into seven groups. CCT was measured using ultrasonic pachymetry. Correlations between CCT, age, and sex were sought. Mean (± standard deviation) CCT for both eyes was 544.6±30.5 μm. Mean CCT was 545.2±30.5 μm in the left eye and 544.6±30.5 μm in the right eye, and was 545.0±25.6 μm in men and 544.4±33.5 μm in women. Mean CCT was 550.8±35.7 μm in subjects aged 18-29 years, 557.5±27.6 μm in those aged 30-39 years, 551.3±31.4 μm in those aged 50-59 years, 544.0±31.4 μm in those aged 50-59 years, 544.2±31.6 μm in those aged 60-79 years, 535.1±27.8 μm in those aged 70-79 years, and 530.1±16.8 μm in those aged 80-89 years. No statistically significant difference in CCT was found between the sexes (P>0.05). However, there was a significant difference in subjects aged 18-29 years; men had higher CCT than women (P