Glasses help minimise epileptic fits or relieve the symptoms of depression with light.
For motorcyclists, however, too much light can be a serious hazard. Enter an Italian startup and its new visor which automatically adjusts to light conditions using a layer of liquid crystals.
Their arrangement is determined by a small solar panel in the helmet, and changes depending on how much light the panel captures. No battery required.
The visor adjusts its tint within seconds, absorbing between 20% of light in cloudy and up to 92% in very sunny weather. The technology could be used for ski goggles or sunglasses, or in the automotive industry.
Liquid crystals are also helping people see things more clearly, irrespective of the distance.
