A team of researchers at the University of California have created a prototype of contact lenses that can automatically focus on objects by detecting the user’s eye movements.
We are still years before the contact lens can work directly on a human eye. Currently, the prototype can only be used on special equipment that uses several components that will have to be miniaturized before a human can use it.
The most interesting part of the study is how contact lenses that could detect electro-oculographic signals generated by the eye would be controlled. Looking down, for example, could make the lens automatically focus on near objects, such as words on a book page, while looking up would automatically adjust the lens to focus on something farther away. The sensitivity of the system could even be adjusted to detect multiple flickers in one eye, which could change the lens to function as a telephoto zoom lens.