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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
medicine
Anterior chamber depth in normal subjects by rotating scheimpflug imaging
Saudi Journal of Ophthalmology, Volume 25, No. 3, Year 2011
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Description
Purpose: Anterior chamber depth (ACD) is an important preoperative parameter in anterior segment surgery. Several factors are known to influence ACD, including race and geography. Our purpose was to sample data from various countries to characterize differences in ACD worldwide and, if any, assess their level of clinical significance. Setting: International, multicenter. Methods: Cross-sectional study. Using the Pentacam Eye Scanner (OCULUS GmbH, Wetzlar, Germany), we analyzed ACD measurements from 1077 eyes of 568 normal adults from nine countries spanning six continents. Differences between countries were assessed by comparison of 95% confidence intervals and by ANOVA. Normative thresholds were constructed at three standard deviations (SD) above and below the mean. Results: Mean ACD was 3.11. mm overall, ranging from 2.91. mm (New Zealand) to 3.24. mm (United States). The ACD among New Zealanders was significantly shallower (P< .0001) than that among Chinese, Egyptians, Germans, Indians, and Americans. The maximum difference in the mean ACDs was 0.33. mm, between New Zealand and the United States. The shallowest 0.15% of normal ACD values occurred below 2.04. mm overall, ranging from 1.69. mm (New Zealand) to 2.42. mm (United States). The deepest 0.15% of normal ACD values occurred above 4.18. mm overall, ranging from 4.03. mm (Saudi Arabia) to 4.35. mm (Brazil). Conclusions: ACD did not vary significantly in the countries studied, with the notable exception of New Zealand. Surgeons should anticipate a greater likelihood of a shallow ACD when evaluating patients from New Zealand. Clinical examination and direct measurement of ACD are recommended. Finally, deep ACD has limited clinical utility in screening for keratoconus. © 2011.
Authors & Co-Authors
Feng, Matthew T.
United States, Tucson
The University of Arizona
Belin, Michael W.
United States, Tucson
The University of Arizona
Júnior, Renato Ambrósio
Brazil, Rio de Janeiro
Instituto de Olhos Renato Ambrósio
Grewal, Satinder P.S.
India, Chandigarh
Grewal Eye Institute
Yan, Wang
China, Tianjin
Tianjin Medical University
Shafik Shaheen, Mohamed Shafik
Egypt, Alexandria
Faculty of Medicine
McGhee, Charles
New Zealand, Auckland
The University of Auckland
Maeda, Naoyuki
Japan, Suita
Graduate School of Medicine
Neuhann, Tobias H.
Germany, Munich
Aam Augenklinik am Marienplatz
Dick, Hans Burkhard
Germany, Bochum
Universitätsklinikum Der Ruhr-universität Bochum
Alageel, Saleh A.
Saudi Arabia, Riyadh
Riyadh Military Hospital
Steinmueller, Andreas
Germany, Wetzlar
Oculus Optikgeraete Gmbh
Statistics
Citations: 32
Authors: 12
Affiliations: 11
Identifiers
Doi:
10.1016/j.sjopt.2011.04.005
ISSN:
13194534
e-ISSN:
13194534
Research Areas
Health System And Policy
Study Design
Cross Sectional Study
Study Approach
Quantitative