Recently occasionally, the cases are seen due to injection of prednisolone and other medicines into inferior nasal concha or behind the globe that induce retinal artery occlusion.

• 数周后，视网膜水肿消退，但阻塞区的神经节细胞及神经纤维均已死亡，视网膜萎缩并有色素沉着，血管变细呈白线状。视神经可出现萎缩。