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目的探讨永存增生性原始玻璃体的Ｂ型超声特点以用于临床诊断和鉴别诊断。方法用探头频率为１０ＭＨｚ的ＨＵＭＰＨＲＥＹ眼用Ａ／Ｂ超声诊断仪和ＡＣＵＳＯＮ１２８型超声仪以直接法检查辅以动态观察。结果（１）部位位于晶体之后与视乳头相连，形成蘑菇状回声、（２）眼轴：较对侧正常眼短。（３）彩色多谱勒超声可显示玻璃体动脉血流并可探测血流频谱。结论Ｂ型超声对于永存增生性原始玻璃体的诊断和鉴别诊断具有极大的价值。
Objective To investigate the characteristics of B-type ultrasonography of prostatic hyperplastic primary vitreous for clinical diagnosis and differential diagnosis. Methods HUMPHREY ocular A / B ultrasonic diagnostic apparatus and ACUSON128 ultrasonic system with a probe frequency of 10MHz were examined by direct method combined with dynamic observation. Results (1) The site is located behind the lens and connected with the optic disc, forming a mushroom-shaped echo, (2) axial length: shorter than the normal contralateral eye. (3) Color Doppler ultrasound can display vitreous artery blood flow and detect blood flow spectrum. Conclusion B-mode ultrasound is of great value in the diagnosis and differential diagnosis of persistent vitreous primitive vitreous.