【摘要】 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。更多还原

【Abstract】 Objective The study was designed to found early visual function damage of patients with NPC treated by radiotherapy. Method Determination of pattern visual evoked potential (VEP) 70 patients with NPC treated pre-radiotherapy and post-radiotherapy and during radiotherapy. Result 32. 8 % patients (23/70) VEP abnormal, the mean value of P1 latency was prolonged. Conclusions Determination of pattern visual evoked potential may found early visual function damage of patients with NPC treated by radotherapy.更多还原