现代研究证明 ,在视觉系统内存在着许多相互独立的信息传递通道 ,这些通道具有对某些刺激特征选择性敏感的神经机制 ,它们在视网膜上有不同的感受野 ,担负着不同的功能。对视觉通道的研究 ,有助于揭示视觉感知及神经网络的结构 ,了解某些眼科疾病的发病机理 ,从而对这些疾疾进 Modern research shows that there are many independent information transmission channels in the visual system. These channels have neural mechanisms selectively sensitive to certain stimulus features. They have different receptive fields in the retina and perform different functions. The study of the visual pathway helps to reveal the structure of the visual perception and neural network and understand the pathogenesis of certain ophthalmic diseases,