McKerral M, Polomeno R C, Leporé F, Lachapelle P
Programme d'intégration dans la communauté, Centre de réadaptation Lucie-Bruneau, Montréal, Québec, Canada.
Acta Ophthalmol Scand. 1999 Feb;77(1):40-4. doi: 10.1034/j.1600-0420.1999.770110.x.
With the use of the pattern reversal visual evoked potential and the motor reaction time, we sought to differentiate anisometropic amblyopia from strabismic amblyopia on the basis of the visual transmission time.
Pattern reversal visual evoked potentials and motor reaction times were obtained in nine normal subjects, eight anisometropic and seven strabismic amblyopes.
Our results show that while the peak time of the pattern visual evoked potential in anisometropic amblyopia and strabismic amblyopia was significantly delayed, it could not distinguish the two types of amblyopia. In contrast, a significantly longer interocular increment in strabismics compared to anisometropes was found with the reaction time, but not with the pattern visual evoked potential.
Our findings thus show that it is possible to distinguish strabismic from anisometropic amblyopes using interocular differences in reaction time measurements. Our results bring support to the contention that the two types of amblyopia represent different neural abnormalities.
通过使用图形翻转视觉诱发电位和运动反应时间，我们试图基于视觉传导时间来区分屈光参差性弱视和斜视性弱视。
对9名正常受试者、8名屈光参差性弱视患者和7名斜视性弱视患者进行了图形翻转视觉诱发电位和运动反应时间的检测。
我们的结果表明，虽然屈光参差性弱视和斜视性弱视中图形视觉诱发电位的峰值时间显著延迟，但无法区分这两种类型的弱视。相比之下，发现斜视患者的眼间反应时间增量比屈光参差患者显著更长，但图形视觉诱发电位则无此差异。
因此，我们的研究结果表明，利用反应时间测量中的眼间差异可以区分斜视性弱视和屈光参差性弱视。我们的结果支持了这两种类型的弱视代表不同神经异常的观点。
