Retinitis Pigmentosa
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Researchers combine gene therapy and event cameras to partially restore a blind man's sight
A formerly blind patient has unexpectedly had a portion of his visual perception restored thanks to a cutting-edge hybrid biological-technological therapy known as optogenetics.
15 Minutes of Fame: Legally blind player with hearing loss conquers raid healing
From Hollywood celebrities to the guy next door, millions of people have made World of Warcraft a part of their lives. How do you play WoW? We're giving each approach its own 15 Minutes of Fame. Talk about working around healer's tunnel vision: Rainbo, a 25-man discipline/holy priest on Cenarion Circle (US-H), stays out of the fire working with a mere 10-degree field of vision. Rainbo suffers from Usher Syndrome, an incurable condition that causes deafness and progressive vision loss. Despite those challenges, the 29-year-old gamer has played WoW off and on since it first came out. "Basically, I only have a small field of central vision that is obscured with floaters and flashers, but I creatively use addons and techniques to successfully raid -- even on heroic," Rainbo says. "We're currently 4/7 heroic Firelands, which puts us as the #8 guild on the server in terms of progression." Pretty hot for a guy who can't even see the fires he's moving out of.
Subretinal implant successfully tested on humans, makes blind narrowly see
How many scientists does it take to properly install a lightbulb? When that lightbulb is an implant that stimulates retinal photoreceptors to restore one's sight, quite a few -- even if they disagree whether said implant should be placed on top of the retina (requiring glasses to supply power and video feed) or underneath, using photocells to channel natural sunlight. Now, a German firm dubbed Retina Implant has scored a big win for the subretinal solution with a three-millimeter, 1,500 pixel microchip that gives patients a 12 degree field of view. Conducting human trials with 11 patients suffering from retinitis pigmentosa, the company successfully performed operations on seven, with one even managing to distinguish between similar objects (knife, fork, spoon) and perform very basic reading. Though usual disclaimers apply -- the tech is still a long way off, it only works on folks who've slowly lost their vision, etc. -- this seems like a step in the right direction, and at least one man now knows which direction that is.
UPenn scientists create replacement retina on a chip
Scientists at the University of Pennsylvania have developed a new silicon chip that could be "embedded directly into the eye and connected to the nerves that carry signals to the brain's visual cortex," reports New Scientist. The chip aims to help people suffering from retinitis pigmentosa, which is the gradual death of one's retinal cells, those really useful bits of organic matter that convert light into nerve impulses for the brain to process. Previous attempts at solving this biological conundrum have often gone the route of using a video camera usually connected to a tiny computer to process the signal, which is then attached to the optic nerve. If Penn's research works, it would let this chip be directly implanted into the eye -- with a direct connection to the optic nerve -- removing the need for an external camera. Even better, this new version also mimics the way a healthy retina adjusts to light intensity, contrast, and even movement. The next step is to reducing the size and power consumption of the chip before clinical trials can get going.[Via New Scientist]
