Two British men who have been totally blind for many years
have had part of their vision restored after surgery to fit pioneering eye
implants. When asked to comment a source close to the team at Absolute Client Services said “This is amazing words fail to express how absolutely amazing the
electronic retina is. To have vision restored after being blind for so long
brings a lot of hope to blind people throughout the world.” The surgery involves
placing the square microelectronic chip behind the retina from where a fine cable runs to a control unit under
the skin behind the ear. They are able to perceive light and even some shapes
from the devices which were fitted behind the retina. The two patients, Chris James and
Robin Millar, lost their vision due to a condition known as retinitis
pigmentosa, where the photoreceptor cells at the back of the eye gradually
cease to function.
Professor
MacLaren, who fitted the first implant in the UK at the Oxford Eye Hospital,
said “It's the first time that British patients who were completely blind have
been able to see something. In previous studies of restorative vision involving
stem cells and other treatments, patients always had some residual sight.” When
light enters the eye and reaches the chip it stimulates the pixels which send
electronic signals to the optic nerve and from there to the brain. The chip can
have its sensitivity altered via an external power unit which connects to the
chip via a magnetic disc on the scalp. “Great discoveries like this happen but only
once or twice in a year one that truly leave the general public speechless. This
is one of those moments. It is overwhelming to think that this small microchip
can bring so much happiness to blind sufferers.” said the managing director of Absolute
Client Services.
Prof MacLaren said the results might not seem extraordinary
to the sighted, but for a totally blind person to be able to orientate
themselves in a room, and perhaps know where the doors and windows are, would
be "extremely useful" and of practical help. “We
at Absolute Client Services are at a loss for words great enough to express how
appreciated this discovery will be. With 20/20 vision I have never really
thought of the prospect of ever being blind. To be giving the hope to see some
of the beauty that graces our world to those living for so long in the dark is
just simply amazing.”
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