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Abstract #5243 Published in IGR 1-2
Factors affecting the central corneal thickness of Hong Kong-Chinese
Cho P; Lam CCurrent Eye Research 1999; 18: 386-374
PURPOSE: The aims of this study were to investigate the effect of age, intraocular pressure (IOP), refractive error (spherical equivalent), and corneal curvatures on the central corneal thickness of Hong Kong-Chinese. We also compared the central corneal thickness of Hong Kong-Chinese with those previously reported for other national/ethnic groups. METHODS: The central corneal thicknesses of 151 subjects of age 10-60 years were measured using an ultrasound pachometer. IOP, refractive error and the corneal curvatures of these subjects were also recorded. RESULTS: The mean ? SD central corneal thickness of the right and left eyes was 575 ? 32 mm and 572 ? 31 mm, respectively. No significant difference in central corneal thickness was found between right and left eyes or between male and female subjects. Central corneal thickness decreased with increasing age, but the effect appeared to be due to difference in female subjects only. The maximum decrease in central corneal thickness occurred in subjects in the age group of 10-25 years, and in this age group, central corneal thickness and age were significantly correlated in both male and female subjects. IOP and central corneal thickness were significantly correlated. There was no correlation between central corneal thickness and refractive error, or between central corneal thickness and corneal curvatures. CONCLUSIONS: Central corneal thickness decreased with increasing age, but this appeared to occur in female subjects only. Central corneal thickness was significantly correlated with IOP, but not with refractive error or corneal curvatures. Our subjects also had significantly thicker corneas than those reported for Caucasian subjects.
P. Cho, The Hong Kong Polytechnic University, Department of Optometry and Radiography, Kowloon; Hong Kong
Classification:
6.1 Intraocular pressure measurement; factors affecting IOP (Part of: 6 Clinical examination methods)
