Artificial Iris

University researchers in Finland and Poland have used a light sensitive polymer to create a contact lens-like autonomous iris. Quoting directly, “It’s made from a polymer (a liquid crystal elastomer) that expands when exposed to light, then shrinks back when the light is lessened. This causes an opening in the middle to get smaller or larger, depending on the light levels – in this way, it works very much like a natural iris. Unlike automatic irises in cameras, it requires no power source or external light detection system.”   MORE

Image Credit: Tampere University of Technology