US Researchers Developed Lens To Detect Glaucoma
US researchers in the University of California, have claimed to develop a contact lens with the help of Polydimethylsiloxane (PDMS) that claims to monitor conditions such as glaucoma. Researchers added a chemical to a liquid PDMS solution that causes the mixture to set, or polymerise, when zapped with UV light. Then, they exposed the mixture to UV light through a mask containing a circuit pattern. The technique can be used to create features just 10 micrometers in size.
Polydimethylsiloxane is widely used in everything from contact lenses to breast implants but the process of cast molding severely limits the kinds of structures that can be made with the material. Now, Hailin Cong and Tingrui Pan from the university of California have come up with a simple method to produce PDMS components without the need for casting molds and their process can also make the material conduct electricity.
One of the first devices that researchers have produced is a tiny pressure sensor, which they bent into the shape of a contact lens. In glaucoma patients, that pressure rises and changes the shape of the eye, which would deform the contact lens sensor. 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.
Source: ANI
Filed under Contact Lens, Eye Care Products, Eye Diseases, Glaucoma
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