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Contact lens that can release drug could be used to treat glaucoma - The Guardian

Contact lens that can release drug could be used to treat glaucoma - The Guardian

May 17, 2022 53 secs

A contact lens that can release a drug if it detects high pressure within the eye has been created by scientists who say it could help treat glaucoma.

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.

Writing in the journal Nature Communications, the team describe how they created the device using an upper and lower lens, with a snowflake-shaped pressure sensor and wireless power transfer device sandwiched between them around the rim of the lenses.

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.

“Here, the researchers have developed a minimally invasive contact lens that can detect these changes in pressure within the eye to provide real-time monitoring, but the contact lens can also respond by allowing on-demand drug delivery directly to the eye,” he said.

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