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Glaucoma: Good contact lens may monitor eye situation and ship medication when wanted

A wi-fi contact lens that displays eye stress and delivers glaucoma medication on demand has been examined in animals

Well being

17 Could 2022

man putting in contact lens

Contact lenses like this one can already enhance imaginative and prescient – however in future they may additionally assist deal with glaucoma

Klaus Vedfelt/Getty Photos

A wi-fi contact lens gadget may assist deal with the attention situation glaucoma by monitoring the build-up of stress inside the attention and routinely delivering medication when it rises too excessive.

Glaucoma impacts about 80 million individuals worldwide in accordance with some estimates and is brought on by inadequate drainage of fluid from the attention, which elevates eye stress and may harm the optic nerve that transmits visible alerts to the mind.

The situation is often handled utilizing medication that assist drain extra fluid from the attention, administered within the type of eye drops. However individuals could fail to stay to their remedy schedule, in accordance with Xi Xie at Solar Yat-Sen College in Guangzhou, China, and his colleagues.

They designed a prototype contact lens gadget that may sense eye stress and launch glaucoma medication when wanted. The outer layer of the lens has six tiny copper plates organized in a hoop across the pupil that sense eye deformation brought on by an increase in eye stress. An antenna positioned close to the attention then transmits the info to a close-by laptop. The internal layer of the lens – involved with the cornea area of the attention – is loaded with a pressure-lowering drug known as brimonidine that may be launched when the lens receives a sign from the pc through the antenna.

The researchers have trialled their lenses in rabbits with out glaucoma. They first demonstrated that the gadget may monitor eye stress within the animals and transmit the info wirelessly to the exterior laptop. Then they used the pc to wirelessly transmit a sign to the contact lens that triggered the discharge of brimonidine.

By then monitoring the rabbits, they discovered that the animals’ eye stress had decreased by round a 3rd after half-hour and by greater than 40 per cent after 2 hours, on common.

“The realisation of this know-how to be used at point-of-care settings may revolutionise the lives of thousands and thousands of sufferers with glaucoma,” says Ali Yetisen at Imperial Faculty London. “It [would be] an exquisite addition to the [tools] of the ophthalmologist.”

Nonetheless, additional research will probably be wanted to evaluate how effectively the gadget works in people.

Journal reference: Nature Communications, DOI: 10.1038/s41467-022-29860-x





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