Smart Contact Lenses

Jul 30, 2008

"Smart" contact lenses that measure pressure within the eye and dispense medication accordingly could be made possible using a new material developed by biomedical engineers at UC Davis.

Tingrui Pan, assistant professor of biomedical engineering, and postdoctoral researcher Hailin Cong started with a material called polydimethylsiloxane (PDMS). They developed a method for placing powdered silver on the PDMS in a precise pattern, to create conductive wires. The silver also has antimicrobial properties.

The researchers were able to shape the PDMS-silver into a contact-lens shape, and show that it could function as a simple pressure sensor. Glaucoma, a build-up of pressure in the eye, is a leading cause of blindness worldwide. A contact lens that could continuously measure pressure within the eye and relay the data to a computer would allow doctors to learn more about glaucoma and improve patient treatment.

The researchers plan to apply for approval to begin trials of the lenses in humans, Pan said. They are collaborating with Professor James Brandt of the Department of Ophthalmology at the UC Davis School of Medicine.

A paper describing the fabrication technique was published in the July 2008 issue of the journal Advanced Functional Materials.

Source: UC Davis

Explore further: A new finding on cell movement dynamics sheds light on cancer therapy

Related Stories

Shell, Greenpeace spar over Arctic drilling safety zones

1 hour ago

Attorneys for Royal Dutch Shell PLC presented testimony to a federal court judge Tuesday that the company needs safety zones around its Arctic drill fleet to prevent Greenpeace USA activists from endangering ...

Samsung's profit hit by bigger iPhones, sinks 39 percent

1 hour ago

Samsung Electronics Co. said its first quarter net profit plunged 39 percent as consumers switched to bigger iPhones, squeezing earnings from its mobile business to less than half what they were a year earlier.

Recommended for you

'Zombie' bacteria found able to kill other bacteria

2 hours ago

(Phys.org)—A trio of researchers with the Hebrew University of Jerusalem has found that bacteria that die as a result of silver poisoning can serve as a means to continue to kill other bacteria in the same ...

User comments : 0

Please sign in to add a comment. Registration is free, and takes less than a minute. Read more

Click here to reset your password.
Sign in to get notified via email when new comments are made.