A non-invasive device that allows people who are blind to sense visual images using their tongue has received marketing approval from the US Food and Drug Administration.

Share on Pinterest The BrainPort converts images into electrical impulses that are felt on the tongue as vibrations or tingling sensations.

Image credit: Wicab Inc

When used with a cane or assistance dog, the BrainPort V100 can enhance people’s ability to navigate their environment by literally “tasting the light.”

The battery-powered BrainPort looks like a square plastic lollipop – this goes in the mouth and sits on the tongue – connected via a wire to a tiny video camera mounted on a pair of sunglasses that the user wears.

The video camera captures images that are converted to electrical impulses that are sent to electrodes in the lollipop – the impulses are felt on the tongue as vibrations or tingling.

After receiving training and with experience of use, the user learns to interpret the signals through their tongue and determine size, shape and position of objects in front of them and even discern if they are moving.

The Food and Drug Administration (FDA) came to their decision following a review of clinical data on the safety and effectiveness of the device. Effectiveness assessments included object recognition and word identification.

Some users reported that the device left a metallic taste in the mouth and gave them a burning or stinging sensation. There were no serious adverse effects, say the FDA.