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KMID : 1813520200090010032
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Journal of the Korean Glaucoma Society
2020 Volume.9 No. 1 p.32 ~ p.39
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Correlation between Axial Length and Ocular Anatomical Parameters in Acute Primary Angle Closure
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Nam Jeoung-Woo
Sung Mi-Sun
Park Sang-Woo
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Abstract
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Purpose : To investigate the correlation between the axial length and ocular anatomical parameters in patientswith acute primary angle closure (APAC).
Methods : A total of 214 eyes from 214 patients with APAC were included in this study. Anterior segment parameters such as anterior chamber depth, anterior chamber width (ACW), lens vault, iris thickness 750, iris curvature, central corneal thickness, white-to-white, lens thickness, lens position, keratometry (K), angle opening distance 500, angle opening distance 750, trabecular iris space area 500, trabecular iris space area 750 and axial length (AL) were retrospectively obtained by use of anterior-segment optical coherence tomography and optical low-coherence reflectometry. Eyes were classified into 3 groups on the basis of AL; eyes with axial length of more than 23 mm (Group A), between 22 and 23 mm (Group B), less than 22.0 mm (Group C). Ocular anatomical parameters were compared among groups. In addition, Between the group of AL more than 24 mm (Group D) and the control group, ocular anatomical parameter were compared. Correlations between AL and ocular anatomical parameters were also investigated using Pearson correlation analysis.
Results : Among the three groups, the anterior width (11.54 ± 0.38 mm vs. 11.28 ± 0.42 mm vs 11.03 ± 0.38 mm) and corneal curvature (43.25 ± 1.29 diopters [D] vs. 44.50 ± 1.25 D vs 45.81 ± 1.22 D), were showed significant differences (p < 0.001). There were no significant differences in other ocular anatomical parameters among the three groups. Significant correlations were only found between axial length and ACW (r = 0.47, p < 0.01) and K (r = ?0.64, p < 0.01).
Conclusion : Even increasing AL, ocular anatomical parameters did not show a strong relationship with AL except ACW and K. These anatomical features may explain the prevalence of APAC in eyes with longer AL.
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KEYWORD
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Body mass index, Mean ocular perfusion pressure, Metabolic syndrome
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