| Objective: To test the feasibility of panoramic UBM (ultrasound biomicroscopy, UBM) (KINSCAN) to determine the horizontal distance of sulcus to sulcus (STS).As compared with other routine criteria used to infer the distance of STS, our aim is to demonstrate that ultrasound biomicroscopy is a more applicable device for evaluating the STS value.Methods: 120 eyes of 69 patients in our research center were examined by panoramic UBM. The values of STS distance obtained were analyzed using Pearson correlation test by comparing with other parameters including angle to angle (ATA) distance, axial length (AL), the anterior chamber depth (ACDu) examined by UBM, anterior chamber depth (ACDa) examined by A-type ultrasound, 3-9 points horizontal white to white (WTW) distance, and the average corneal curvature (K value). The statistical significance of the correlation was further determined by multiple linear regression analysis.Results: 1,In all the eyes examined, the average value of STS distance is (10.19±1.16) mm, the standard deviation is 0.58 and variation value is (5.75±0.65) %. 2,Pearson correlation analysis showed that there was a significant correlation between ATA, WTW, AL, K value, ACDa, and ACDu with STS, (p < 0.05), in which AL and ATA possess a moderate correlation (︱r︱≥0.5), with 0.596 and 0.530, respectively; WTW, ACDa, ACDu, and K value exert a weak correlation values, (0.3≤︱r︱< 0.5), with 0.432, 0.490, 0.489 and 0.351, respectively. 3,The multiple linear regression analysis showed that AL and WTW significantly correlated with STS; the p values were less than 0.05, with 0.00001 and 0.049, respectively. ATA, K value, ACDa and ACDu were not significantly correlated with STS; the p values were greater than 0.05, with 0.085, 0.238, 0.665, and 0.132, respectively.Conclusion:1. Panoramic UBM is a reliable device for measuring STS distance. 2. Measurement of AL, WTW, and ATA distance can be alternative approaches to evaluate the STS distance. |
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