Journal of refractive surgery (Thorofare, N.J. : 1995) · 2025
Correlation and Agreement of Anterior Chamber Biometric Parameters and Sulcusto-Sulcus Diameter in Chinese Patients With High Myopia and Varying Axial Lengths.
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Huang Yuyan, Xu Huiling, Yang Xiaoling, Huang Hehe, Zhi Zhina, Chen Si
Аннотация
PURPOSE: To evaluate the relationship between anterior chamber biometric parameters (angle-to-angle diameter [ATA] and anterior chamber width [ACW]) and the sulcus-to-sulcus diameter (STS) in myopic patients with varying axial length (AL).
METHODS: A 50-MHz ultrasound biomicroscopy (UBM) device measured STS at the 0° and 90° meridians in the right eyes of 77 Chinese patients with high myopia and an anterior chamber depth greater than 2.80 mm. Swept-source optical coherence tomography device (CASIA2; Tomey) measured ATA and ACW at the 0°, 45°, 90°, and 135° meridians, whereas corneal topography measured the horizontal white-to-white diameter (WTW-0°).
RESULTS: Vertical STS, ATA, and ACW measurements were significantly longer than their horizontal counterparts (P < .001). Differences in STS and ACW between vertical and horizontal meridians were comparable (P = .503), whereas ATA differences was more pronounced than that of STS (P = .032). Both STS-0° and STS-90° were significantly greater than WTW-0°, ATA, and ACW at their respective meridians (P ⩽ .016), except for STS-0° versus ACW-0° (P = .127). Correlations between STS-0°/STS-90° and WTW-0° were weaker than those with ACW or ATA. STS-0° exhibited the strongest correlation with ACW-0°, whereas STS-90° correlated best with ACW-45°. For patients with AL shorter than 28.5 mm, no significant differences existed between STS-0° and WTW-0°/ATA-0°/ACW-0°. In contrast, for those with AL greater than 28.5 mm, only ACW-0° was comparable to STS-0°. At the vertical meridian, only ACW had no significant differences compared to STS for patients with different ranges of AL.
CONCLUSIONS: In Chinese patients who are potential candidates for Implantable Collamer Lens implantation, ACW shows better concordance with STS than ATA and WTW-0°. The reliability of WTW-0° for estimating STS decreases with increased AL, making ACW more suitable for STS estimation in patients with AL greater than 28.5 mm, especially at non-horizontal meridians.
METHODS: A 50-MHz ultrasound biomicroscopy (UBM) device measured STS at the 0° and 90° meridians in the right eyes of 77 Chinese patients with high myopia and an anterior chamber depth greater than 2.80 mm. Swept-source optical coherence tomography device (CASIA2; Tomey) measured ATA and ACW at the 0°, 45°, 90°, and 135° meridians, whereas corneal topography measured the horizontal white-to-white diameter (WTW-0°).
RESULTS: Vertical STS, ATA, and ACW measurements were significantly longer than their horizontal counterparts (P < .001). Differences in STS and ACW between vertical and horizontal meridians were comparable (P = .503), whereas ATA differences was more pronounced than that of STS (P = .032). Both STS-0° and STS-90° were significantly greater than WTW-0°, ATA, and ACW at their respective meridians (P ⩽ .016), except for STS-0° versus ACW-0° (P = .127). Correlations between STS-0°/STS-90° and WTW-0° were weaker than those with ACW or ATA. STS-0° exhibited the strongest correlation with ACW-0°, whereas STS-90° correlated best with ACW-45°. For patients with AL shorter than 28.5 mm, no significant differences existed between STS-0° and WTW-0°/ATA-0°/ACW-0°. In contrast, for those with AL greater than 28.5 mm, only ACW-0° was comparable to STS-0°. At the vertical meridian, only ACW had no significant differences compared to STS for patients with different ranges of AL.
CONCLUSIONS: In Chinese patients who are potential candidates for Implantable Collamer Lens implantation, ACW shows better concordance with STS than ATA and WTW-0°. The reliability of WTW-0° for estimating STS decreases with increased AL, making ACW more suitable for STS estimation in patients with AL greater than 28.5 mm, especially at non-horizontal meridians.