Smartglasses automatically focus on what you are looking at

A pair of smartglasses that automatically focus on objects which could be used by people with a variety of vision defects have been developed by researchers. Called'Autofocals', the glasses use depth-sensing cameras and eye-tracking technology which promise to keep objects in hyper-sharp focus at all times. Presbyopia is a common form of age-induced far-sightedness, where the lenses in the eyes become stiff and have trouble focusing on close-up objects. The condition typically kicks in at around age 45 and it affects more than a billion people and a key factor as to why many need to wear glasses in middle age. But a Stanford University team have developed a way to treat defects like this, so that when worn they mimic the natural'autofocus' mechanism of a healthy eye.