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20例(33只眼)干性和湿性期老年黄斑变性(AMD)患者做了视诱发电位(VEP)检查。VEP 选用模型翻转,15′和60′方格刺激,1.9次/秒翻转率。结果在60′方格刺激时,27.3%的眼(9眼)出现 VEP 潜伏期或振幅异常,其中湿性 AMD 眼5只(占湿性眼的63%),15′方格刺激时,36.4%的眼(12眼)出现 VEP异常,其中6只眼为湿性 AMD(占湿性眼的75%)。VEP 的异常与视力下降有关。但少数视力较好眼也出现 VEP 异常。这对于进一步探讨此病引起的视功能的改变有一定意义。
Visual evoked potential (VEP) was performed in 20 patients (33 eyes) with dry and wet age-related macular degeneration (AMD). VEP flip model selection, 15 ’and 60’ square stimulus, 1.9 times / sec turnover rate. Results During 60 ’square grid stimulation, 27.3% of the eyes (9 eyes) showed abnormal VEP latency or amplitude, including 5 wet AMD eyes (63% of wet eyes) and 36.4% eyes of 15 (12 eyes) had VEP abnormalities, of which 6 eyes were wet AMD (75% of wet eyes). VEP abnormalities and vision loss related. However, a small number of eyes with visual acuity also appear abnormal VEP. This is of great significance to further explore the visual function changes caused by the disease.