Age and Sex Variation in Angle Findings Among Normal Chinese Subjects: A Comparison of UBM, Scheimpflug, and Gonioscopic Assessment of the Anterior Chamber Angle

BackgroundLimited data are published on the ultrasound biomicroscope (UBM) findings of the anterior chamber angle. This work provides a population-based assessment of angle findings and compares 3 modalities for assessing angle dimensions. MethodsA sample of 268 persons who had participated in a population-based study of glaucoma prevalence in Singapore were reexamined by UBM (nasal, temporal, and inferior angles only), Scheimpflug photography of angle width, and gonioscopy. Angle findings were compared, and age and sex influences evaluated. ResultsThe temporal angle was the widest of the 3 angles imaged with the UBM, and the inferior angle was the narrowest (nearly 20% more narrow than the temporal angle, P<0.005). Women were found to have narrower angles than men and older persons had more narrow angles. Scheimpflug photography did not provide enough detail of the angle to increase our understanding of angle anatomy. ConclusionsThe data reported support earlier findings that the anterior chamber angle is narrower in older individuals and women. Methods of assessing the angle may themselves influence the appearance of the angle. Limited agreement exists between the angle quantification methods studied. An ideal method of angle assessment would not contact the eye and would not require light be directed at the eye.

[1]  C. McCarty,et al.  Ocular biometry in occludable angles and angle closure glaucoma: a population based survey , 2003, The British journal of ophthalmology.

[2]  N. Congdon,et al.  Age, gender, biometry, refractive error, and the anterior chamber angle among Alaskan Eskimos. , 2003, Ophthalmology.

[3]  P. Foster,et al.  Biometric gonioscopy and the effects of age, race, and sex on the anterior chamber angle , 2002, The British journal of ophthalmology.

[4]  T. Wong,et al.  Variations in ocular biometry in an adult Chinese population in Singapore: the Tanjong Pagar Survey. , 2001, Investigative ophthalmology & visual science.

[5]  D. Machin,et al.  The prevalence of glaucoma in Chinese residents of Singapore: a cross-sectional population survey of the Tanjong Pagar district. , 2000, Archives of ophthalmology.

[6]  R Ritch,et al.  Quantitative assessment of the anterior segment using ultrasound biomicroscopy. , 2000, Current opinion in ophthalmology.

[7]  P. S. Lee,et al.  Anterior chamber depth measurement as a screening tool for primary angle-closure glaucoma in an East Asian population. , 2000, Archives of ophthalmology.

[8]  H. Ishikawa,et al.  Angle recess area decreases with age in normal Japanese. , 2000, Japanese journal of ophthalmology.

[9]  K. Kashiwagi,et al.  Anterior chamber angle biometry: quadrant variation, age change and sex difference. , 1998, Current eye research.

[10]  N. Congdon,et al.  Biometry and primary angle-closure glaucoma among Chinese, white, and black populations. , 1997, Ophthalmology.

[11]  P. Foster,et al.  Anterior chamber depth in Mongolians: variation with age, sex, and method of measurement. , 1997, American journal of ophthalmology.

[12]  G. Spaeth,et al.  The anterior chamber angle is different in different racial groups: A gonioscopic study , 1994, Eye.

[13]  P. Alsbirk VARIATION AND HERITABILITY OF OCULAR DIMENSIONS , 1977, Acta ophthalmologica.

[14]  P. Alsbirk ANTERIOR CHAMBER DEPTH AND PRIMARY ANGLE‐CLOSURE GLAUCOMA , 1975, Acta ophthalmologica.

[15]  Glen D Sullenger Color Atlas of Gonioscopy , 1975 .

[16]  H. D. Hoskins,et al.  Interpretive gonioscopy in glaucoma. , 1972, Investigative ophthalmology.

[17]  G. Gorin Re-evaluation of gonioscopic findings in angle-closure glaucoma. Static versus manipulative gonioscopy. , 1971, American journal of ophthalmology.

[18]  R. Lowe Causes of shallow anterior chamber in primary angle-closure glaucoma. Ultrasonic biometry of normal and angle-closure glaucoma eyes. , 1969, American journal of ophthalmology.

[19]  K. Schirmer Gonioscopy and artefacts. , 1967, The British journal of ophthalmology.