方法：选取我院2014-01/12因孔源性视网膜脱离行玻璃体切除手术的患者，记录其术前UBM检查的结果，并对阳性结果进行分析，探讨术前应用UBM检查的价值。

结果：接受玻璃体切除手术的孔源性视网膜脱离患者共356例357眼。术前均进行了UBM检查，其中122眼(34.17%)有阳性发现，56眼有睫状体脉络膜脱离，28眼有房角狭窄，6眼房角关闭，28眼发现有睫状体囊肿，4眼发现有虹膜囊肿，11眼发现有前部增殖性玻璃体视网膜病变，1眼发现有视网膜囊肿，其中12眼同时存在两种病变。本研究中UBM发现脉络膜脱离者56眼，阳性率15.7%； 术前眼B超检查发现脉络膜脱离者25眼，阳性率7.0%，差异有统计学意义(χ²=13.382，P<0.05)。

结论：对于患孔源性视网膜脱离，因病情需行玻璃体切除术的患者，术前检查UBM能够全面了解前房角、睫状体和前部脉络膜视网膜的情况，对全面了解患者术前情况，估计手术难度，指导术中操作及术后随访有重要意义。

METHODS: Patients who underwent PPV for RRD in our hospital from January to December 2014 were selected. The preoperative results of UBM were recorded and the positive findings of UBM were analyzed, the value of preoperative application of UBM was investigated.

RESULTS:Totally 356 cases(357 eyes)of patients with RRD were received PPV. All patients were examined by UBM, 122 eyes(34.17%)were positive, 56 eyes were ciliochoroidal detachment, 28 eyes were narrow anterior chamber angle, 6 eyes were chamber angle-closure, 28 eyes were ciliary body cyst, 4 eyes were iris cyst, 11 eyes were anterior proliferative vitreoretinopathy, 1 eye was retinal cyst. There were 12 eyes existing two lesions at the same times. In this study, patients with choroidal detachment was detected by UBM in 56 eyes, the positive rate was 15.7%, while 25 eyes was detected by B-ultrasonography, the positive was 7.0%. The difference was statistical significant(χ²=13.382, P<0.05).

CONCLUSION: The patients with RRD have underwent PPV for the condition of illness, preoperative UBM can be examined to detect the condition of anterior chamber angle, iris, ciliary and anterior choroid, which is significant for comprehensively understanding the preoperative condition of patients, estimating the difficulty of the operation, and guiding operation and the postoperative follow-up.