At that point, it can be too late to improve or restore vision.
到那时可能为时已晚，无法改善或恢复视力了。
So then, why not opt for something that can restore your natural vision conveniently?
那么，为什么不选择一些可以恢复您的自然视觉方便？
Many had been blind for years and had had unsuccessful operations to restore their vision.
许多患者多年眼盲、接受过不成功的视力恢复手术。
Many had been blind for years and had had unsuccessful operations to restore their vision.
许多患者多年眼盲、接受过不成功的视力恢复手术。
应用推荐