中国科学家研发新型隐形眼镜，可实时监测眼压辅助治疗青光眼
Contact lens that can release drug could be used to treat glaucoma

Glaucoma is an eye disease that involves damage to the optic nerve, and can lead to blindness if not treated.青光眼是一种损害视神经的眼病，如不治疗可能导致失明。

Researchers in China revealed they have developed a contact lens that can sense an increase in pressure within the eye and release an anti-glaucoma drug should the pressure exceed a certain level.中国科研人员表示，他们已经研制出一种隐形眼镜，可以感知眼压的升高，并在压力超过一定水平时释放抗青光眼药物。

When the pressure inside the eye increases, the gap between the upper and lower lenses decreases. This is detected by the pressure sensor by means of a cantilever. The sensor then sends a signal to the wireless system which subsequently triggers the release of an anti-glaucoma drug, from a hydrogel attached to an electrode, and enables it to cross the cornea of the eye. The drug, brimonidine, acts to reduce the pressure within the eye.当眼内压力增加时，上下镜片之间的间隙就会减少。压力传感器通过一个悬臂检测到这一点。然后，该传感器向无线系统发送信号，随后触发抗青光眼药物的释放，并使其穿过眼角膜。该药物来自连接到电极的水凝胶，名为溴硝柳胺，可以降低眼压。

The researchers note the lenses are not only soft and minimally invasive but are also battery-free, adding that the approach could be expanded to help tackle other eye diseases.研究人员指出，这种镜片不仅柔软、无创，而且无需电池，这种方法可以扩展到辅助治疗其他眼部疾病。

“The materials required to create such contact lenses are inexpensive and soon could be mass-produced,” he added.阿赫默德还称：“制造这种隐形眼镜所需的材料价格低廉，很快就能大规模生产。”