I've dreamed in colour for the first time in 20 years': Blind British man can see again after first successful implant of 'bionic' eye microchips.
- Microchips restore sight to people suffering retinitis pigmentosa - an incurable condition that leads to blindness
- Condition affects one in every 3,000-4,000 people
- Clinical trial with two sufferers 'exceeds expectations'
- Sufferers able to detect outlines of objects 'within days'
- Vision expected to improve further as 3mm chip 'beds in'
By
Jenny Hope
It was the ‘magic moment’ that released Chris James from ten years of blindness.
Doctors switched on a microchip that had been inserted into the back of his eye three weeks earlier.
After a decade of darkness, there was a sudden explosion of bright light – like a flash bulb going off, he says.
Now
he is able to make out shapes and light. He hopes his sight – and the
way his brain interprets what the microchip is showing it – will carry
on improving.
Surgeons in Oxford, led by Professor Robert MacLaren, fitted the chip at the back of Chris' eye in a complex eight-hour operation last month. Chris, from Wiltshire, said: 'I've always had that thought that one day I would be able to see again.' |
Mr James, 54, is one of two British men who have had their vision partly restored by a pioneering retina implant.
The other, Robin Millar, one of Britain’s most successful music producers, says he has dreamed in colour for the first time.
Both
had lost their vision because of a condition known as retinitis
pigmentosa, where the photoreceptor cells at the back of the eye
gradually cease to work.
Their
stories bring hope to the 20,000 Britons with RP – and to those with
other eye conditions such as advanced macular degeneration which affects
up to half a million.
Mr
James had a ten-hour operation to insert the wafer-thin microchip in the
back of his left eye at the Oxford University Eye Hospital six weeks
ago. Three weeks later, it was turned on.
Mr
James, who lives in Wroughton, Wiltshire, with his wife Janet, said of
his ‘magic moment’: ‘I did not know what to expect but I got a flash in
the eye, it was like someone taking a photo with a flashbulb and I knew
my optic nerve was still working.’
The chip is 3mm by 3mm, and is implanted into the eyeball of sufferers |
The Six Million Dollar Man: A similar 'bionic' technology was used to restore sight to the blind, and the first group of British patients to receive the electronic microchips were regaining 'useful vision' just weeks after undergoing surgery |
The Wiltshire man can now recognise shapes after becoming the first British patient to be fitted with the digital chip |
Robin Millar from London, one of two men to undergo cutting edge bionic eye treatment |
The microchip has 1,500 light sensitive pixels which take over the function of the retina’s photoreceptor rods and cones.
One of the first tests was making out a white plate and cup on a black background.
Mr James, who works for Swindon
Council, said: ‘It took a while for my brain to adjust to what was in
front of me, but I was able to detect the curves and outline of these
objects.’
Tim Jackson, a consultant retinal
surgeon at King’s College Hospital and Robert MacLaren, a professor of
ophthalmology at the University of Oxford and a consultant retinal
surgeon at the Oxford Eye Hospital, who are running the trial, say it
has ‘exceeded expectations’ with patients already regaining ‘useful
vision’.
The first group of British patients to receive the electronic microchips were regaining ¿useful vision¿ just weeks after undergoing surgery |
The company hopes for a further trial with ten new patients later this year |
Ten more Britons with RP will be
fitted with the implants, which are also being tested in Germany and
China. The device, made by Retina Implant AG of Germany, connects to a
wireless power supply buried behind the ear. This is connected to an
external battery unit via a magnetic disc on the scalp. The user can
alter the sensitivity of the device using switches on the unit.
Mr Jackson said: ‘It’s difficult to say how much benefit each patient will get, this pioneering treatment is at an early stage.
‘But it’s an exciting and important
step forward. Many of those who receive this treatment have lost their
vision for many years. The impact of them seeing again, even if it is
not normal vision, can be profound and at times quite moving.’ Mr
Millar, 60, who was behind Sade’s Diamond Life album, has been blind for
25 years. He said: ‘Since switching on the device I am able to detect
light and distinguish the outlines of objects.
‘I have even dreamt in very vivid
colour for the first time in 25 years so a part of my brain which had
gone to sleep has woken up! I feel this is incredibly promising and I’m
happy to be contributing to this legacy.’
The patients were able to detect light immediately after the microchip was activated, while further testing revealed there were also able to locate white objects on a dark background, Retina Implant said |
The chip pairs with an external device to process images |
Chris James from Wiltshire, said: 'I've always had that thought that one day I would be able to see again.' |
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