Role of B-scan ultrasonography in the localization of intraocular foreign bodies in the anterior segment: a report of three cases.
Role of B-scan ultrasonography in the localization of intraocular foreign bodies in the anterior segment: a report of three cases.
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B超在眼前段眼内异物定位中的作用：附3例报告
DOI：
10.1186/s12886-015-0076-1
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发表时间：
2015-08-14
影响因子：
2
通讯作者：
Chen M
中科院分区：
文献类型：
--
作者：
Wang K;Liu J;Chen M
背景眼内异物的准确定位对眼外伤患者的治疗至关重要。B型超声检查通常用于检测后段的IOFB。在此，我们报告三例IOFB在眼前段附近的透镜后囊，这是准确定位的B型超声动态横向scanning.Case presentationAll三名患者有眼外伤的历史，他们的临床症状是兼容的持续IOFB。由于角膜混浊和外伤性白内障，裂隙灯生物显微镜难以直接观察IOFB。计算机断层扫描检测到眼前节中的IOFB，但无法确定确切位置。进行了超声生物显微镜检查，但由于穿透深度有限，未能显示任何IOFB。进一步应用B扫描超声检查，但使用轴向扫描（B扫描超声检查的常规程序）也未能显示任何眼内异物。然而，使用动态横向扫描的B扫描超声检查，IOFB的准确位置最终显示为在病例1中嵌入后透镜皮质，在病例2中邻近后透镜囊，在病例3中位于靠近后透镜囊的前玻璃体中。根据B超定位设计不同的手术方法，均成功摘除IOFB。结论B超是一种简单有效的外伤性白内障IOFB定位方法。横位扫描比轴位扫描更适合检测后透镜囊附近的眼前段IOFB。
BackgroundThe accurate localization of intraocular foreign bodies (IOFBs) is very important for the management of ocular trauma patients. B-scan ultrasonography is usually used to detect IOFBs in the posterior segment. Here, we report three cases with IOFBs in the anterior segment near the posterior lens capsule, which were accurately localized by B-scan ultrasonography under dynamic transversal scanning.Case presentationAll three patients had a history of ocular trauma, and their clinical symptoms were compatible with the persistence of IOFBs. It was difficult to get a direct visualization of IOFBs with slit-lamp biomicroscopy because of opacities of the cornea and traumatic cataract. A computed tomography scan detected IOFBs in the anterior segment, but could not determine the exact location. Ultrasound biomicroscopy was performed but failed to show any IOFBs owing to the limited depth of penetration. B-scan ultrasonography was further applied but also failed to show any intraocular foreign bodies using axial scanning, a routine procedure of B-scan ultrasonography examination. However, using dynamic transversal scanning of B-scan ultrasonography, the accurate location of IOFBs was eventually shown to be embedded in the posterior lens cortex in case 1, adjacent to the posterior lens capsule in case 2, and located in the anterior vitreous close to the posterior lens capsule in case 3. Different surgical procedures were designed according to localization by B-scan ultrasonography, and all IOFBs were successfully removed.ConclusionB-scan ultrasonography is a simple and effective imaging modality in the localization of IOFBs in traumatic cataract. Transversal scanning is more suitable than axial scanning to detect IOFBs in the anterior segment near the posterior lens capsule.