Testing glucose through blood droplets is perhaps a conventional process but obsolete in front of what some scientists have discovered now.
Scientists have developed a new technology that could allow non-invasive testing for glucose via a contact lens that samples its levels in tears.
Glucose is a good target for optical sensing, and especially for surface-enhanced Raman scattering spectroscopy.
The PhD students of Massachusetts Institute of Technology have developed a tiny device, built from multiple layers of gold nanowires stacked on top of a gold film and produced using solvent-assisted nanotransfer printing, which optimised the use of surface-enhanced Raman scattering to take advantage of the technique's ability to detect small molecular samples.
According to the scientists from the University of Houston in the US, there is no such noninvasive method of detecting glucose amount and it requires blood draw. But this new technology can contradict it.
Surprisingly, Google has submitted a patent for a multi-sensor contact lens, which is said to have various other applications too.