视网膜是视觉中光电变化的发生部位 ,其功能及解剖的异常均可导致视觉功能的下降 ,组织病理学证明 :光感受器细胞的变性和死亡是视网膜色素变性、视网膜脱离及其他视网膜疾病致盲的主要原因。因而 ,挽救和替代变性的光感受器细胞 ,促进视网膜细胞的恢复 ,促使其再生可以阻止疾 Retina is the site of optoelectronic changes in the vision, and its function and anatomic abnormalities can lead to the decline of visual function. Histopathology shows that degeneration and death of photoreceptor cells are retinitis pigmentosa, retinal detachment and other retinal diseases caused by blindness main reason. Thus, to save and replace denatured photoreceptor cells, to promote the recovery of retinal cells, to promote its regeneration can prevent disease