Title:3D-printed corneas for the blind

In a first, scientists have created 3D printed human corneas that could solve the shortage of available eye donors and help millions of blind people gain sight again.

首先，科学家创建了三维人类角膜，这些角膜能够解决现有的眼盲人短缺问题，并帮助数百万盲人再次见到。

As the outermost layer of the human eye, the cornea has an important role in focusing vision. Yet there is a significant shortage of corneas available to transplant, with 10 million people worldwide requiring surgery to prevent corneal blindness as a result of diseases such as trachoma, an infectious eye disorder.

角膜作为人类眼睛的最外层，在聚焦视觉上有着重要的作用。然而，可供移植使用的角膜严重短缺，全世界有1 000万人需要手术，以预防由于传染性眼科失调等疾病所造成的角膜盲。

In addition, almost 5 million people suffer total blindness due to corneal scarring caused by burns, lacerations, abrasion or disease. The proof-of-concept research, published in the journal Experimental Eye Research, shows how stem cells from a healthy donor cornea were mixed together with alginate and collagen to create a solution that could be printed, a 'bio-ink'

此外，由于烧伤、撕裂、擦伤或疾病导致的角膜疤痕，将近500万人完全失明。发表在《实验眼研究》杂志上的概念证明研究显示了来自健康的捐赠角膜的干细胞如何与海藻酸和胶原蛋白混合，以创造一种可以打印的“生物墨”解决方案。