Gold In Contact Lenses Helps Shield Eyes From Damaging Light - Study
(Kitco News) - A new study has discovered that tiny amounts of gold in contact lenses can shield eyes from damaging light.
The technology employed in these new type of contact lenses is able to convert heavy light into energy through gold-based plasmonic nanoresonators and safely distribute that energy into the eyes.
“The ability of the Au nanocomposites to act as efficient light concentrators renders this approach a cost-effective alternative to other less absorbing formulations which may also be toxic or degradable upon light irradiation,” stated the study published in the journal Applied Materials Today in June.
In simpler terms, the gold-embedded contact lenses turn light into heat that is transferred to the eye through a breeze or tears.
The study shows that it is possible to use gold in contact lenses to protect the retina from bad light throughout the day.
“These light-protective properties are accomplished through the integration of gold-based plasmonic nanoresonators into the lens polymer network, which provides the hydrogel with a high optical density while preserving visible light transmittance,” the study added.
The results could be very useful for people working with high powered lasers on a long-term basis.
“These materials may provide an all day long eye protection and a minimal obstruction to perform tasks in working environments where light sources are employed,” the study said. “Through this approach, the lenses are endowed with remarkable electromagnetic shielding efficiencies upon exposure to high powered lasers.”