Ultrasonography of the Anterior Segment.
Ultrasonography of the Anterior Segment.
复制标题
眼前段超声检查。
DOI：
10.1016/j.cult.2008.04.004
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发表时间：
2008
期刊：
影响因子：
--
通讯作者：
Jeng,BennieH
中科院分区：
文献类型：
--
作者：
Heur,Martin;Jeng,BennieH
由于角膜的透明性，大多数眼前段结构可以用裂隙灯生物显微镜进行评估。角膜是眼睛的主要屈光元件，占总屈光力的三分之二。由于这种功能，有许多机制可以使角膜保持其透明度，包括其胶原层的超微结构排列、无血管性的维持和用于消肿的内皮泵功能。由于角膜的透明性，常规通过裂隙灯生物显微镜检查角膜，因此不常规使用超声进行评价。然而，在某些情况下，角膜失去了透明度，超声成为评价眼前节的重要辅助手段。在需要超声评价眼前节的情况下，由于B扫描超声检查的局限性，超声生物显微镜（UBM）由于其高分辨率，是首选的方式。1本章将回顾角膜、人工晶状体和眼前节创伤的UBM评价。
Most of the anterior segment structures can be evaluated with slit lamp biomicroscopy because of corneal transparency. The cornea is the main refractive element of the eye, accounting for two-thirds of the total refractive power. Because of this function, there are many mechanisms through which the cornea maintains its transparency, including ultrastructural arrangement of its collagen lamellae, maintenance of avascularity, and endothelial pump function for deturgesence. The cornea is routinely examined by slit lamp biomicroscopy because of its transparency, and therefore it is not routinely evaluated with ultrasound. However, there are some situations in which the cornea loses its transparency, and the ultrasound becomes an important adjunct in the evaluation of the anterior segment. In situations requiring ultrasound evaluation of the anterior segment, because of the limitations of B-scan ultrasonography, ultrasound biomicroscopy (UBM), due to its high resolution, is the preferred modality. 1 This chapter will review UBM evaluation of the cornea, intraocular lenses, and anterior segment trauma.