Read emails on your contact lenses

The scientists said the device could overlay computer -generated visual information on to the real world and be of use in gaming devices and navigation systems.

Imagine reading emails and text messages on your contact lenses which are linked to internet. It may sound a bit utopian, but scientists claim that your imagination could soon turn into a reality.One major problem the researchers had to overcome was the fact that the human eye, with its minimum focal distance of several centimetres, cannot resolve objects on a contact lens. Any information projected on to the lens would probably appear blurry.To combat this, the scientists incorporated a set of Fresnel lenses into the device; these are much thinner and flatter than conventional bulky lenses, and were used to focus the projected image on to the retina.The findings have been published in the 'Journal of Micromechanics and Microengineering'. PTI