Special glasses reduce age-related visual impairment.
A healthy human eye can see with an astonishing resolution of 25,000 ppi, a density that no electronic display has ever matched. Until now.
Enter a Swedish research team that, with the help of tungsten oxide, has reduced pixel size to 560 nanometres. Corresponding to the size of one light-sensitive receptor cell in the eye.
The team embedded the pixels into a reflective layer on a glass substrate, creating a thin screen the size of a human pupil. When ambient light reflects off it, the screen displays colours in the highest resolution that humans can perceive. Virtual reality could be one potential application.
A camera, meanwhile, focuses on objects both near and far.
