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PURPOSE: To document anterior chamber depth in a Mongolian population and quantify the variation in this parameter attributable to age, sex, and method of measurement. METHOD: Depth of the anterior chamber was measured by optical pachymetry in 1,242 subjects aged 10 to 87 years. Figures for 'true' anterior chamber depth were calculated by subtracting central corneal thickness from the distance between the anterior corneal epithelium and anterior lens capsule. A mode ultrasound was also used to measure the distance from anterior corneal epithelium to anterior lens capsule in 94% (942) of subjects aged 40 years and older. These ultrasound data were compared with measurements of the same distance obtained by optical pachymetry. RESULTS: Mean anterior chamber depth in women was more shallow than in men of all ages (ANOVA, P [is less than] .0001), although this difference varied according to age. Mean anterior chamber depth decreased with age and was most accurately represented by a cubic function of age. This change was maximal between the ages of 30 and 60 years and equaled 0.15 mm per decade in men and 0.21 mm per decade in women. Mean depth of the anterior chamber measured by ultrasound was significantly less than the equivalent optical measurement (difference of 0.14 mm in right eyes, P [is less than] .001). CONCLUSIONS: Mean anterior chamber depth in Mongolians decreases with age and is more shallow in women than in men. Ultrasound and optical methods of anterior chamber depth measurement yield significantly different results and are therefore not directly comparable.

To link to full-text access for this article, visit this link: http://dx.doi.org/10.1016/j.ajo.2006.01.020 Byline: Athena W.P. Foong (a), Tien Y. Wong (a)(b), Seang Mei Saw (a)(c), Paul J. Foster (d) Abstract: To examine the relationship among hypermetropia, axial length, and hypertension in a Chinese population. Author Affiliation: (a) Singapore Eye Research Institute, National University of Singapore, Singapore (b) Centre for Eye Research Australia, University of Melbourne, Australia (c) Department of Community, Occupational and Family Medicine, National University of Singapore, Singapore (d) Institute of Ophthalmology, University College London, London, United Kingdom Article History: Accepted 5 January 2006 Article Note: (footnote) Supported by the National Medical Research Council, Singapore and the British Council for the Prevention of Blindness, London, England.

To link to full-text access for this article, visit this link: http://dx.doi.org/10.1016/j.ajo.2007.03.038 Byline: Seang-Mei Saw (a)(b)(c), Tien Y. Wong (a)(c)(d), Steven Ting (a), Athena W.P. Foong (a), Paul J. Foster (e) Abstract: To examine the relationships of diabetes with anterior chamber depth, axial length, and refraction. Author Affiliation: (a) Department of Ophthalmology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore (b) Department of Community, Occupational and Family Medicine, Yong Loo Lin School of Medicine, National University of Singapore, Singapore (c) Singapore Eye Research Institute, Singapore. (d) Centre for Eye Research Australia, University of Melbourne, Australia (e) Institute of Ophthalmology, University College London, London, United Kingdom. Article History: Accepted 23 March 2007