The vitamin, which is normally associated with anti-ageing properties, forms a mesh inside the lens, which slows the release of the drug, ensuring it spends much longer in the eye.

维生素，通常被认为有抗衰老的特性，在隐形眼镜内部形成一个网眼，延缓了药物的释放过程，确保药物可以在眼睛里停留更长的时间。

Dr Chauhan, of the University of Florida, said: 'These vitamin structures are like "nano-bricks". The drug molecules can't go through the vitamin e, they must go round it.

佛罗里达大学的Chauhan博士说：“这些维生素结构类似‘纳米砖块’，药物分子不能够通过维生素e，只能够绕过去。”

But you can bake or microwave these tubers anytime for a super dose of vitamin A — five times the daily value (DV) the Food and Drug Administration (FDA) recommends.

但是其实，我们随时都可以烘烤，或者用微波炉烘焙来食用这种茎块食物，以获取丰富的维生素A，其剂量是美国食品药物管理局所建议的每天食用剂量的5倍。