Sloper J J, Collins A D
Department of Ophthalmology, Queen's Medical Centre, Nottingham, UK.
Doc Ophthalmol. 1994;86(1):47-53. doi: 10.1007/BF01224627.
Monocular and binocular visual evoked potentials were recorded in eight patients with Duane's syndrome who used an abnormal head posture to maintain binocular single vision. With their abnormal head posture, all patients had stereoscopic vision, although with mildly reduced stereoacuity, and the visual evoked potential showed binocular enhancement (mean binocular to monocular ratio, 1.44). Without their head posture, the patients experienced diplopia or suppressed vision in one eye. Binocular visual evoked potentials recorded under these conditions were of lower amplitude (mean binocular to monocular ratio, 1.05). However, without the abnormal head posture, a manifest strabismus was present and the deviating eye was not fixating the stimulus screen. Monocular visual evoked potentials recorded with the eye fixating just to one side of the screen gave little or no response, and this lack of fixation may account for the loss of binocular enhancement of the visual evoked potential in strabismus.
对8例杜安综合征患者进行了单眼和双眼视觉诱发电位记录，这些患者采用异常头位来维持双眼单视。在异常头位情况下，所有患者都有立体视觉，尽管立体视锐度略有降低，且视觉诱发电位显示双眼增强（双眼与单眼的平均比值为1.44）。没有异常头位时，患者会出现复视或一只眼睛视力被抑制。在这些情况下记录的双眼视觉诱发电位振幅较低（双眼与单眼的平均比值为1.05）。然而，没有异常头位时，存在明显斜视，偏斜眼未注视刺激屏幕。用仅注视屏幕一侧的眼睛记录的单眼视觉诱发电位几乎没有或没有反应，这种缺乏注视可能是斜视中视觉诱发电位双眼增强丧失的原因。
