Chiesi C, Sargentini A D, Bolzani R
Doc Ophthalmol. 1984 Aug 15;58(1):51-6. doi: 10.1007/BF00140898.
Ten normal subjects and 14 patients with comitant esotropia were examined by means of pattern visual evoked responses (VER) under monocular and binocular viewing conditions. When both eyes were stimulated together a VER summation was noted both in normals and in strabismics with small-angle deviation and anomalous retinal correspondence (ARC). This is considered as an objective proof of binocularity. Patients with large-angle strabismus and/or suppression of the image of the deviated eye did not show summation. The significance of summation and its relationship with binocular vision was analyzed by recording binocular VER in normals in which diplopia was artificially induced and in strabismics who spontaneously exhibited double vision. A simple way for differentiating normals from strabismics by means of VERs is presented, considering that the presence or absence of summation per se does not achieve this result. This method is based on the anteposition in front of the fixing eye of neutral filters of increasing density. Summation disappears in strabismics with much weaker filters than in normals (0.5 versus 1.6 log. unit).
对10名正常受试者和14名共同性内斜视患者在单眼和双眼观察条件下进行了图形视觉诱发电位（VER）检查。当双眼同时受到刺激时，正常受试者以及小角度斜视和异常视网膜对应（ARC）的斜视患者均出现VER总和。这被视为双眼视的客观证据。大角度斜视和/或偏斜眼图像抑制的患者未表现出总和。通过记录人为诱发复视的正常受试者以及自发出现复视的斜视患者的双眼VER，分析了总和的意义及其与双眼视觉的关系。考虑到仅根据总和的有无无法区分正常人和斜视患者，提出了一种通过VER区分正常人和斜视患者的简单方法。该方法基于在注视眼前放置密度逐渐增加的中性滤光片。斜视患者中总和消失时所需滤光片的密度比正常受试者弱得多（0.5对1.6对数单位）。
