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Title: Pentacam anterior chamber parameters in young and middle-aged Chinese
Authors: Lam, AKC 
Tse, JSH
Keywords: Anterior chamber depth
Anterior chamber volume
Issue Date: 2013
Publisher: Wiley-Blackwell
Source: Clinical and experimental optometry, 2013, v. 96, no. 1, p. 85-91 How to cite?
Journal: Clinical and experimental optometry 
Abstract: Background The aim was to compare the anterior segment of two groups of Chinese using the Pentacam system. Methods Fifty young (median age 21?years) and 50 middle-aged (median age 46?years) subjects with equal numbers of males and females had their axial length measured with the IOL Master. Their axial anterior chamber depth, anterior chamber volume and temporal and nasal anterior chamber angles were measured using the Pentacam and comparisons were made between the two groups. Results Both groups shared similar axial lengths (unpaired t-test: p = 0.37) but young subjects had significantly deeper anterior chamber by 11 per cent (3.60 +/- 0.40?mm) compared with middle-aged subjects (3.24 +/- 0.34?mm) (analysis of variance: p < 0.001). The anterior chamber volume was significantly greater in young subjects by 24 per cent (200.12 +/- 35.59?mm3) than the middle-aged subjects (161.03 +/- 37.79?mm3). The associations of anterior chamber depth and anterior chamber volume with axial length were significant (R2 from 0.16 to 0.50) and similar in both groups. Young subjects had wider anterior chamber angles (mean differences: 4.60 degrees and 6.07 degrees at temporal and nasal, respectively) than middle-aged subjects. Among middle-aged subjects, females had significantly shorter axial length but anterior chamber depths were similar between the two sexes. Females had significantly smaller anterior chamber volumes. Conclusions Middle-aged subjects had more crowded anterior chambers than young subjects with similar axial lengths. Anterior chamber volume may be a more sensitive parameter to reveal this difference than a linear measurement of the anterior chamber depth.
ISSN: 0816-4622
EISSN: 1444-0938
DOI: 10.1111/j.1444-0938.2012.00795.x
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