Wireless LED Contact Lenses Tested On A Living Eye
<div>
Engineers from the Washington (US) and Aalto universities (Finland)Â #-Link-Snipped-# developed sophisticated contact lenses that projects the information to the users eyes. These lenses are wireless and sports LED lights to function. Recently, these lenses were tried out on a living human eye.
#-Link-Snipped-#
</div>
While the proof-of-concept device just comprised a single pixel, it would be able to make way for lenses that may potentially present emails and text messages straight to the wearerâs eyes or assist in health monitoring information such as glucose levels at that time. The lens has an antenna that picks up power in the form of radio waves, an integrated circuit to keep aside the energy and a transparent sapphire chip holding a blue LED. A fundamental exception in this lens is the way eyes focus on the display drawn so near it. It is impossible for the human eye to adjudicate the images nearer than a few centimeters, because of which the display shown by the contact lenses appears blurry. this trouble was eradicated by employing Fresnel lenses, very thin lenses that efficiently comprises a series of prisms instead of a single optical element. But high-resolution image still can't be attained with this length, the study for it is still in the nascent stage.
These lenses were tested on a rabbit to examine the effects it produces on the cornea. Eye surgeons studied the health of the eye by employing bio-microscopy, and the experiment proved out to be successful. Some minor troubles also needed to be looked at, like range upto which the wireless device can receive power, by improving the antennae and by optimizing the transmission frequency.