[超声生物显微镜对泪小管的测量]
[Measurement of canaliculus with ultrasound biomicroscopy].
作者信息
Xu Li-ping, Tao Hai, Han Cui, Wang Peng
机构信息
Department of Ophthalmology, Armed Police General Hospital, Beijing, China.
出版信息
Zhonghua Yan Ke Za Zhi. 2012 Jul;48(7):637-42.
OBJECTIVE
To study biometric measurements of normal canaliculus in vivo with ultrasound biomicroscope.
METHODS
Cross-sectional study. Eighty volunteers of normal lacrimal duct (80 eyes), including 40 men (40 eyes), 40 women (40 eyes), aged from 18 to 82 years old (average 41 years old). Eighty volunteers were divided into three stages, one eye of each volunteer was detected and measured with ultrasound biomicroscope in the goggle state and the imaging characteristics of canalicular ultrasound biomicroscopy were obtained. The length of the vertical canaliculus, the distal, middle, proximal anteroposterior diameter of the vertical canaliculus, the distal, middle, proximal anteroposterior diameter and vertical diameter of the horizontal canaliculus were measured. According to elliptical area formula S = πab (a = 1/2 anteroposterior diameter, b = 1/2 vertical diameter)the distal, middle, proximal transverse erea of the horizontal canaliculus were caculated. The differences among age groups and those among distal, middle, proximal measurements were compared by One-way ANOVA analysis. The measurements of canaliculus between male and female were analyzed using t test.
RESULTS
Eighty volunteers (80 eyes) participated in the study, 6 eyes were failed to be imaged, the success rate was 92.5% (74/80). The length of vertical canaliculus of superior canaliculus were (2.10 ± 0.12) mm, of inferior canaliculus were (2.08 ± 0.10) mm. The proximal, middle, distal anteroposterior diameter of the vertical part of superior canaliculus respectively were (0.24 ± 0.05) mm, (0.28 ± 0.05) mm, (0.33 ± 0.04) mm (F = 16.315, P = 0.000), of inferior canaliculus were (0.23 ± 0.04) mm, (0.28 ± 0.06) mm, (0.32 ± 0.05) mm (F = 17.570, P = 0.000). The proximal, middle, distal transverse erea of the horizontal part of superior canaliculus respect were (0.77 ± 0.13) mm(2), (0.62 ± 0.13) mm(2), (0.48 ± 0.11) mm(2) (F = 22.970, P = 0.000), of inferior canaliculus were (0.79 ± 0.11) mm(2), (0.63 ± 0.08) mm(2), (0.48 ± 0.09) mm(2) (F = 21.45, P = 0.000). There was no significant difference of the canaliculus measurements between male and female (t = 0.105 - 0.487, P > 0.05). No significant differences were found among age groups (F = 0.142 - 3.954, P > 0.05).
CONCLUSION
It is practicable to measure the normal canaliculus in vivo with UBM.
目的
应用超声生物显微镜对正常泪小管进行活体生物测量研究。
方法
横断面研究。80例正常泪道志愿者（80只眼），其中男性40例（40只眼），女性40例（40只眼），年龄18～82岁（平均41岁）。将80例志愿者分为三个阶段，每位志愿者的一只眼在戴眼罩状态下用超声生物显微镜进行探测测量，获取泪小管超声生物显微镜成像特征。测量垂直泪小管长度、垂直泪小管远段、中段、近段前后径，水平泪小管远段、中段、近段前后径及垂直径。根据椭圆面积公式S = πab（a = 1/2前后径，b = 1/2垂直径）计算水平泪小管远段、中段、近段横截面积。采用单因素方差分析比较各年龄组间及远段、中段、近段测量值之间的差异。采用t检验分析男性与女性泪小管测量值。
结果
80例志愿者（80只眼）参与本研究，6只眼成像失败，成功率为92.5%（74/80）。上泪小管垂直部长度为（2.10±0.12）mm，下泪小管垂直部长度为（2.08±0.10）mm。上泪小管垂直部近段、中段、远段前后径分别为（0.24±0.05）mm、（0.28±0.05）mm、（0.33±0.04）mm（F = 16.315，P = 0.000），下泪小管垂直部近段、中段、远段前后径分别为（0.23±0.04）mm、（0.28±0.06）mm、（0.32±0.05）mm（F = 17.570，P = 0.000）。上泪小管水平部近段、中段、远段横截面积分别为（0.77±0.13）mm²、（0.62±0.13）mm²、（0.48±0.11）mm²（F = 22.970，P = 0.000），下泪小管水平部近段、中段、远段横截面积分别为（0.79±0.11）mm²、（0.63±0.08）mm²、（0.48±0.09）mm²（F = 21.45，P = 0.000）。男性与女性泪小管测量值差异无统计学意义（t = 0.105～0.487，P＞0.05）。各年龄组间差异无统计学意义（F = 0.142～3.954，P＞0.05）。
结论
应用超声生物显微镜对正常泪小管进行活体测量是可行的。
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