(on the left) Contact lenses with built-in pressure sensors could monitor glaucoma (Image: © Wiley-VCH Verlag GmbH and Co)
A contact lens with a built-in pressure sensor that could help monitor conditions such as glaucoma has been made by researchers in the US.
The device is the result of a new technique that can embed conducting circuits in the organic polymer traditionally used to make contact lenses.
Polydimethylsiloxane (PDMS) is an elastic, transparent and gas-permeable organic polymer that can be cast-moulded into a range simple shapes. It is widely used in everything from contact lenses to breast implants.
Full review story in New Scientist and original research in Advanced Functional Materials (DOI: 10.1002/adfm.200701437)
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