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International Ophthalmology
Erschienen in:

05.01.2022 | Original Paper

Distribution of anterior chamber angle measurements in South African young adults: an optical coherence tomography study

verfasst von: Nishanee Rampersad, Rekha Hansraj

Erschienen in: International Ophthalmology | Ausgabe 6/2022

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Abstract

Purpose

Assessment of anterior chamber angle (ACA) variables is important to screen, diagnose and monitor ocular anomalies. Even though data on ACA variables, such as angle-opening distance taken at 500 µm (AOD500) and trabecular-iris angle (TIA), are available in the literature, limited information is available about these variables in African sub-populations. The purpose of this study is to describe the distribution of ACA measurements (AOD500 and TIA) in a South African young adult population.

Methods

In this cross-sectional study, 700 young adults were recruited from a university student population using two-stage random sampling. The Optovue iVue 100 optical coherence tomographer was used to measure the ACA variables. The distribution of the AOD500 and TIA measurements was analysed using descriptive and inferential statistics. Data from only the right eyes were analysed because the ACA measurements in the two eyes showed high levels of interocular symmetry.

Results

The measurements for the nasal and temporal ACAs were asymmetrically distributed (p < 0.001). The median AOD500 measurements in the nasal and temporal angles were 539 µm and 542 µm, respectively. The median TIA measurements were similar (~ 36°) in the two horizontal angles. The temporal ACA measurements were slightly higher than the nasal ACA measurements. Females had higher median ACA measurements than males (p ≥ 0.029).

Conclusion

The ACA measurements in South African young adults resemble non-Gaussian curves. The ACA measurements are different from that reported in other sub-populations worldwide and most participants had ACA measurements associated with non-occludable ACAs.
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Metadaten
Titel
Distribution of anterior chamber angle measurements in South African young adults: an optical coherence tomography study
verfasst von
Nishanee Rampersad
Rekha Hansraj
Publikationsdatum
05.01.2022
Verlag
Springer Netherlands
Erschienen in
International Ophthalmology / Ausgabe 6/2022
Print ISSN: 0165-5701
Elektronische ISSN: 1573-2630
DOI
https://doi.org/10.1007/s10792-021-02164-7

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