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功能性弱视的解剖——功能病变的特点是外侧膝状体神经元减少,病因机制的特点是两眼在外侧膝状体神经元水平不平衡,可能继发于双眼感觉输入的不同。人类和脊椎动物有3种神经节细胞,ON纤维,OFF和ON—OFF纤维,第一种在刺激开始时反应,第二种在刺激结束时反应,第三种对两种情况都有反应。以间断刺激可引起不同方式的反应:低频时,每个光刺激首先激发ON成分的反应,最后激发OFF成分的反应;频率较高时,ON—OFF成分反应,再增加频率,但未达到融合,则OFF成分先中止,
Anatomy of functional amblyopia - Functional lesions are characterized by a reduction of the lateral geniculate nucleus neurons, which is characterized by an imbalance in the level of the lateral geniculate body neurons in both eyes and possibly secondary to the difference in sensory inputs of both eyes. There are three types of ganglion cells, ON fibers, OFF and ON-OFF fibers in humans and vertebrates. The first responds at the start of the stimulus, the second responds at the end of the stimulus, and the third responds in both cases. Intermittent stimulation can cause different modes of response: At low frequencies, each light stimulus first activates the reaction of the ON component and finally the OFF component; at higher frequencies, the ON-OFF component reacts, increases the frequency but does not reach the fusion , The OFF component is suspended first,