Researchers in the United Arab Emirates have developed contact lenses that can help to correct color blindness, Medgadget reports.
Containing gold nanoparticles, the lenses help to increase red-green contrast in wearers while also functioning as corrective lenses.
Red-green color blindness can pose a variety of challenges, such as having difficulty knowing when to stop at traffic lights.
Initially, the researchers tested lenses that had been dyed pink, but noticed that they leeched dye, meaning that they were unstable and potentially unsafe.
The team then turned to gold nanocomposites, which have been used for centuries to create “cranberry glass,” which has a pink hue. The researchers mixed gold nanoparticles into a hydrogel and used this to fabricate the lenses.