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목적 : The purpose of this study was to calculate the correct mean trabecular meshwork (TM) height of the Korean population and compare these data with those of other regions or ethnic populations. We hypothesized that there will be regional differences in TM height not only among different ethnicities but also among different Asian populations.
방법 : This study randomly included 250 eyes of patients who underwent anterior segment optical coherence tomography at Yonsei University Gangnam Severance Hospital between January 2015 and December 2017. We measured the distance from the scleral spur to Schwalbe’s line in patients with open and closed angles and calculated the TM height by using the open- and closed-angle ratios in the general Korean population. This result was compared with those of previous studies that measured the TM height in other countries.
결과 : The mean TM height of the patients in our study was 752.109 ± 115.812 μm (open-angle group: 799.222 ± 61.945 μm; closed-angle group: 572.896 ± 96.275 μm). Considering the compensated data, the estimated true Korean mean TM height was 791.981 ± 75.891 μm. The TM height of Koreans was quite different from that previously reported in Asian populations. The results of comparison of TM height and glaucoma prevalence in the Korean population with those in other ethnic populations supported the opinion that glaucoma develop can be affected by TM height.
결론 : This study has reported the estimated true mean TM height of Koreans. Our results endorse the opinion that TM height can affect the risk of glaucoma development. However, the TM height of Koreans was different from those of previously studied Asian populations. This suggests that, even within the same Asian population, patients should be distinguished more specifically by region or nationality when studying anterior segment structures.
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