due to the polarity and pH of the lens material. The authors are now aiming to design improved probes to obtain suitable spectral responses to glucose within the lens.

However, these lenses have no visible lines, improving the cosmetic appearance of your lenses while providing clear natural vision at all distances. A thinner lens material, referred to as higher ...

"The laser beam can be positioned with great accuracy on surfaces, so we can produce significantly smaller microlenses than is possible with previously existing methods," commented Thomas Höche head ...

a Fresnel lens can be made from far more mundane materials. He shows us a working lens made from transparent plastic tube, and even successfully smoulders a piece of paper with it under the ...

However, by the 1980s, consumer distaste for radioactive things and concern for factory workers ended the production of hot camera lenses. Thorium is the most abundant radioactive material on ...

in comparison to lenses made from other materials. Millions of people enjoy healthy contact lens wear on a daily basis. However, contact lenses are not risk-free. Severe, painful eye infections ...

They found 15-20% of US users simply flick these fiddly lenses down the drain via the bathroom sink or toilet. The Arizona State University study suggests that much of the plastic material then ...