Smart spectacles to help the blind 'see'
24 November Daily Mail
Smart spectacles for the blind that could take the place of white
canes and guide dogs may be available in two years, an inventor claims.
The devices are designed to prevent 'legally blind' individuals with
a small degree of residual vision from bumping into objects.Using tiny
stereoscopic cameras within the frames, they project simplified images
onto the lenses which shine more brightly the closer the wearer gets to
obstacles.
The glasses will be tested in a series of trials starting in January
next year involving 160 people with severely impaired sight in Oxford
and London.Developer Dr Stephen Hicks, from Oxford University, said he
hoped a finished model will be commercially available in around two
years.
The cost is expected to be around £600 - slightly more than a
smartphone. In comparison, a guide dog costs up to £30,000 to train.Dr
Hicks said the spectacles were designed as a navigational aid, not to
restore lost vision.
'The glasses work using a pair of cameras that determine the distance
of objects and we simply translate that into a light display,' he said.
'This is not restoring sight, but we can improve spatial
awareness.'Around 300,000 people in the UK are registered as legally
blind.
Of these, 90 per cent possess some residual vision allowing them to
detect blurry shapes and differences between light and dark.
Research has shown that fewer than half of people who are legally
blind attempt to leave their homes on a daily basis, said Dr Hicks.'
The aim is to increase the independence of the hundreds of thousands
of people who are visually impaired in the UK,' he added.
A pilot study last year is said to have yielded 'very encouraging'
results. Volunteers trying out the glasses managed to master them within
a few minutes.
'People were able to recognise where a table was, where a wall was,
and when a person was five metres away,' said Dr Hicks.
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