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Glaucoma Could Be Monitored by Smart Contact Lens
"This new way of manufacturing PDMS can significantly extend [its] use for biological sensing systems," New Scientist quoted Pan, as saying.
One of the first devices that researchers have produced is a tiny pressure sensor, which they bent into the shape of a contact lens.
Pan said that such a device could measure the stress on the cornea surface, and the fluid pressure within the eye to monitor glaucoma and ocular hypertension.
"The eye always has a certain pressure, which is why the eyeball is a sphere," Pan said.
In glaucoma patients, that pressure rises and changes the shape of the eye, which would deform the contact lens sensor.
"The change in configuration will alter the resistance and give a different electrical reading," Pan said.
Their prototype has an opaque sensor that would impair vision and so would be worn only briefly, but researchers are designing transparent equivalents that could be worn for long periods to give a continuous pressure read-out.
They said that to read the data wirelessly, they would use a tiny RFID tag.
Source-ANI
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