超声生物显微镜在小梁网裂伤诊断中的应用

Application of ultrasound biomicroscopy in diagnosis of trabecular meshwork laceration

目的探讨超声生物显微镜检查（UBM）对眼球挫伤致小梁网裂伤诊断的作用。方法对3例反复前房积血的眼球挫伤行UBM及眼压测量，前房积血吸收后行前房角镜检查，并随访3～5月。结果UBM提示3例均有不同程度的前房积血，前房角后退，巩膜突前内表面均可见楔形无回声凹陷。外伤后就诊及随访中3眼的眼压波动在8～17mmHg（1mmHg=0．133kPa）。前房积血吸收后，前房角镜检查均发现相应位置小梁网裂痕。随访中前房角镜检查见积血吸收，但小梁网裂痕处未见明显变化，UBM见楔形无回声凹陷持续存在。结论UBM是诊断小梁网裂伤的有效手段；伴小梁网裂伤的眼球挫伤易发生反复前房积血。

Objective To investigate the function of ultrasound biomicroscopy（UBM） in diagnosis of trabecular meshwork laceration caused by ocular contusion. Methods The UBM and intraocular pressure measurement were performed in three patients with recurrent hyphema caused by ocular contusion. The go- nioscopy was performed on all patients after the hyphema was absorbed. They were followed up for three to five months. Results The UBM result showed that all of the three patients had different degrees of anterior chamber hyphema, recession of anterior chamber angle and the wedge shape of echoless pitting in the anteri- or internal face of sclera spur. Their intraocular pressure fluctuated between 8 - 17 mmHg during the follow- ing up. The trabecular meshwork laceration was found after the hyphema was absorbed by gonioscopic exami- nation. The trabecular meshwork crack and wedge shape of echoless pitting could still be found in the patients during the following up and the wedge shape of echoless pitting remained persistently by UBM. Conclusion UBM is an effective method to diagnose the trabecular meshwork laceration. It＇ s easy to induce anterior chamber recmTent hyphema in ocular contusion with the trabecular meshwork laceration.