Klistorner A I, Graham S L, Grigg J R, Billson F A
Save Sight and Eye Health Institute, Sydney University, Department of Ophthalmology, New South Wales, Australia.
Aust N Z J Ophthalmol. 1998 May;26 Suppl 1:S91-4. doi: 10.1111/j.1442-9071.1998.tb01386.x.
PURPOSE/METHODS: To improve the performance of visual-evoked potentials (VEP) in the assessment of the human visual field, the multi-focal cortically scaled pattern VEP was recorded up to 250 of eccentricity in normal subjects. Monopolar and varying bipolar electrode positions were used.
The monopolar response was strongly biased towards the lower hemifield. Bipolar leads straddling the inion (2 cm above and below) achieved approximately equal signals from the upper and lower visual field. Division into sectors of similar wave-form augments the analysis compared with summed full-field responses.
With this technique, the multi-focal VEP can be used to objectively assess the visual field.
目的/方法：为提高视觉诱发电位（VEP）在评估人类视野方面的性能，对正常受试者记录了多焦点皮层缩放模式VEP，其偏心度可达250。使用了单极和变化的双极电极位置。
单极反应强烈偏向下方视野。跨越枕外隆凸（上下各2厘米）的双极导联从上方和下方视野获得的信号大致相等。与全视野总和反应相比，将其分为波形相似的扇区可增强分析效果。
采用这种技术，多焦点VEP可用于客观评估视野。
