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目的探讨视诱发电位对鼻咽癌放疗患者视功能监测的作用。方法用现诱发电位（VEP）检测70例鼻咽癌病人放疗前、放疗中、放疗后的视功能情况。结果发现32．8％患者（23／70）有VEP异常改变．其中轻度异常8例，中度异常11例，重度异常4例。在放疗中的15例患者中就发现2例轻度异常．1例中度异常。结论放射治疗中可产生视路损害，VEP检测可早期发现鼻咽癌放疗患者的视功能损害。
Objective To investigate the effect of visual evoked potential on the monitoring of visual function in radiotherapy of nasopharyngeal carcinoma. Methods Preoperative radiofrequency (VEP) detection of 70 cases of nasopharyngeal carcinoma patients before radiotherapy, radiotherapy, radiotherapy after the visual function. The results showed that 32.8% of patients (23/70) had abnormal changes of VEP. There were 8 mild abnormalities, 11 moderate abnormalities and 4 severe abnormalities. In 15 cases of radiotherapy found in 2 cases of mild abnormalities. 1 case of moderate abnormalities. Conclusion Radiation therapy can produce visual pathway damage, VEP detection can early detection of nasopharyngeal carcinoma radiotherapy patients with functional impairment.