Comparison of corneal versus through-the-lid A-scan ultrasound biometry.
Comparison of corneal versus through-the-lid A-scan ultrasound biometry.
复制标题
角膜与透过眼睑 A 扫描超声生物测量的比较。
DOI：
10.1097/00006324-199710000-00024
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发表时间：
1997
期刊：
影响因子：
--
通讯作者：
Mutti,DO
中科院分区：
文献类型：
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作者：
Twelker,JD;Kirschbaum,S;Zadnik,K;Mutti,DO
背景：准确的婴幼儿眼轴超声测量数据对于理解眼部发育是必不可少的。传统的方法使用角膜接触表面麻醉，但没有镇静是不可行的，对大多数这些患者。我们评估了一种替代方法，将探头放置在闭合的眼睑上。方法：我们比较了35名年轻成年受试者的A扫描超声生物测量结果，其中直接在角膜上使用探头与在闭合的眼睑上使用探头。结果：两种方法的平均前房深度无显著差异（角膜= 3.83 mm，眼睑= 3.87 mm，p= 0.13，配对t检验）。平均透镜厚度（角膜= 3.63 mm，眼睑= 3.75 mm，p= 0.0001，配对t检验）和平均玻璃体腔深度（角膜= 17.50 mm，眼睑= 17.68 mm，p= 0.0440，配对t检验）显着different.Conclusion.超声检查通过闭合眼睑似乎是一种可行的方法，与角膜超声检查相比，具有可接受的有效性。透镜厚度和玻璃体腔深度的一致性可能是不理想的，但这些数据对计划未来的婴儿和幼儿研究应该是有用的。
Background.Accurate ultrasonography data on axial ocular dimensions in infants and toddlers are essential for understanding ocular development. Conventional methods using corneal contact with topical anesthesia but without sedation are not feasible for most of these patients. We evaluate an alternative method which places the probe on the closed eyelid.Methods.We compared A-scan ultrasound biometry measurements taken with the probe directly on the cornea with those with the probe on the closed eyelid on the right eye of 35 young adult subjects.Results.There was no significant difference between methods for mean anterior chamber depth (corneal= 3.83 mm, lid= 3.87 mm, p= 0.13, paired t-test). The mean lens thickness (corneal= 3.63 mm, lid= 3.75 mm, p= 0.0001, paired t-test) and mean vitreous chamber depth (corneal= 17.50 mm, lid= 17.68 mm, p= 0.0440, paired t-test) were significantly different.Conclusion.Ultrasonography through the closed eyelid appears to be a viable method with acceptable validity compared with corneal ultrasound. Poorer agreement for lens thickness and vitreous chamber depth may be undesirable, but these data should be useful for planning future studies of infants and toddlers.