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A Light-Powered Retina Implant For the Blind
the_newsbeagle writes: In certain diseases of the retina, people lose function in the photoreceptor cells that respond to light and trigger a message to the brain. So engineers have designed various retina implants that do the job instead, including the Argus II system, which received the first FDA approval for an implanted visual prosthetic in 2013. But the Argus II only produces vision of about 20/1200. A new implant in the pipeline from Stanford University has already achieved 20/250 vision in rats, and is aiming at 20/120, which would be below the legal threshold for blindness. This implant is photovoltaic, so the same infrared light that beams an image of the world into the implanted chip also powers its electronics.
Cardiology has nothing to do with this. Cardiology is about hearts, not eyes....
"I do not agree with what you say, but I will defend to the death your right to say it"
20/20 basically means "A person can read at 20 feet with a person with generally good vision should be able to read at 20 feet."
And 20/1200 basically means "A person can read at 20 feet with a person with generally good vision should be able to read at 1200 feet."
and they will lose their federal benefits.
Bah, unsustainable! Only Coal, Oil, and Natural Gas can supply the clean, affordable power Real Americans need to see.
Next they'll be wasting our tax dollars on wind, tidal, and hydro powered implants.
I don't suffer from insanity, I enjoy every minute of it!
People don't care what you can see at 1 ft, they care what you see at 20 ft.
I prefer to read a book at 1 ft, you insensitive clod.
But that's a different measurement.
If someone is short sighted, they may not be able to focus on something 20 feet away.
They may have perfect vision at a distance of 4 inches.
I prefer to read my book at 304.8mm, in insensitive imperial clob