You are right, but the persons who are working cures for optical atrophy say cameras are helpful to overcome the condition.
Subramani -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of P. Subramani Sent: Tuesday, March 13, 2007 12:20 PM To: accessindia@accessindia.org.in Subject: Re: [AI] Digital vision Sir, You have got the concept of an eye wrong. From Retina, the signals are transmitted to brain via the optic nerves. To bypass the disfunctioning optic nerves, artificial nerves or electrodes are to be inserted which so far hasn't happened. You may please study the eye structure and only then, you will understand. A Delhi-based doc Geetha Mishra is treating persons with Retinal diseases.She uses a liquid that is into the ye eyes. This treatment is for a period of six months. Through the injections, the existing retina is destroyed and a new one is formed for which the cost is Rs 3,00,000.00 But there is quite good cure for eye diseases in homeopathy. My friend who had nil vision is now able see movement on the computer monitor though not able to recognise each and everything. Let me tell you the funniest thing. In US, a blind persons was successfully restored vision. But the unfortunate thing the Visual cortex was unable to process the signals. MRI and FMRI tests revealed that the blood flow from the eye to the brain through the optic nerves but in the visual cortex. In effect, the eyes were able to see. But the brain was not processing. So even today, he is living as a normal blind using cane. I shall post later the cure for optic nerves by Russian docs. ----- Original Message ----- From: "Subramani L" <[EMAIL PROTECTED]> To: <accessindia@accessindia.org.in> Sent: Monday, March 12, 2007 12:09 PM Subject: Re: [AI] Digital vision > If the doc you are referring to is the same as the one I heard of, Some > people in Bangalore have tried him and found him not so successful. > Besides, fixing the camera as a replacement for retina I think sends the > image straight to the brain without the help of optic nerves and so, > those suffering from problems like optical atrophy can also take > advantage of medical electronic devices. Dr G Kumara Mannikavel, who is > head of genetic department at Shankara Nethralaya, is one of the Indian > docs who I know is keeping abreast with the researches about R P and > other genetic conditions. Perhaps I will try and get his e-mail id and > post it in the list so that those interested can mail him and find out > if these researches have any credible outcomes. > > Subramani > > -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] On Behalf Of P. > Subramani > Sent: Sunday, March 11, 2007 5:29 PM > To: accessindia@accessindia.org.in > Subject: Re: [AI] Digital vision > > Good research. But the problem is they are researching on retina only. > even > if the retina is activated with chips or new cells, the main snag is the > > optic nerves. Most persons suffering from RP also suffer from optic > nerves > disorders. So far no successful trials have been made to regenerate the > said > nerves or to bypass them and use something else. A Delhi-based > acupuncturist > has successfully cure RP, Macular Degeneration and Glaucoma to the > extent of > 80 percent or more. > ----- Original Message ----- > From: "vishnu ramchandani" <[EMAIL PROTECTED]> > To: <accessindia@accessindia.org.in> > Sent: Saturday, March 10, 2007 4:46 PM > Subject: [AI] Digital vision > > > Digital vision > > Amazing scientific breakthroughs promise sight for the > blind in the near future > > David Twiddy/AP > > In Star Trek: The Next Generation, Geordi La Forge is > a blind character who can see through the assistance > of special implants in his eyes. While the Star > Trek character "lives" in the 24th century, people > living in the 21st century may not have to wait that > long for the illuminating technology. > > Dr Kristina Narfstrom poses with one of her cats used > in the recent surgeries that implanted a microchip > into the cat's eye. > The working proof of this concept is a humble > cinnamon-coloured, 4-year-old Abyssinian cat called > Gingersnap. > > Gingersnap is fighting a losing battle with a disorder > that is slowly killing her retinas. "By the time she'd > be 5, she'd probably be blind," said Kristina > Narfstrom, a veterinary ophthalmologist at the > University of Missouri-Columbia. > > But a thin film at the back of the eyeball makes sight > possible. > > Gingersnap's condition is similar to retinitis > pigmentosa, an incurable genetic disease in humans > that strikes one out of every 3,500 people around the > world, often causing blindness by attacking the > photoreceptor cells that register light and colour. > > Narfstrom, who discovered the feline version of the > disease among Abyssinians in her native Sweden, is > implanting special silicon chips in partially blind > cats in a bid to help replace or possibly repair > diseased retinas in humans. > > Encouraging results > > The chips, which provide their own energy, have shown > encouraging results in clinical human trials, in some > cases improving sight in people with retinitis > pigmentosa or at least slowing the disease's > development. Narfstrom said chips have been implanted > in 30 people. > > Narfstrom's cats will help researchers fine-tune the > chips' performance and train physicians on surgical > techniques to implant the devices, because the > structure of cat eyes is similar to human eyes. > > Dr Narfstrom and a colleague carrying out the > procedure for microchip implantation. > The 2-millimeter-wide chips, developed by Optobionics > of Illinois, USA, are surgically implanted in the back > of eye. Each chip is covered with 5,000 > microphotodiodes > that react to light, sending electric signals along > the optic nerve to the brain. > > "We're placing it right where the photoreceptors are > and, if they're lacking, this is supposed to replace > what they're doing," she said. "At this point, > it's impulses of light they're seeing (as opposed to > images), but the aim of the research is to get more > information out of the chip." > > Besides helping slow the advance of the disease, > studies suggest that the electric currents generated > by the chips may be regenerating damaged > photoreceptors > surrounding the implants. > > Narfstrom said she should know in about two years > whether the implants are actually encouraging retinal > cells in her cats to grow. > > Not the only cure... > > The Optobionics chip is just one of many research > paths now swarming with scientists looking for ways to > protect and restore sight. > > Besides genetic therapy, which is seen as a good tool > to fight hereditary disorders, researchers are also > looking to use stem cells to rebuild damaged retinal > cells. Others are looking for substances that could > trick healthy retinal cells surrounding the > photoreceptors to take over for their diseased > counterparts. > > Then there are the many attempts, like Optobionics, of > creating artificial sight. Some efforts include > miniature video cameras that pipe images straight > to the brain, devices that send signals to a network > of miniature electrodes attached to the retina or > chips that eventually could graft themselves to > retinal cells, creating a cyborg-like system for > producing images. > > An enlarged photo of the actual microchip that is > implanted > A French company is conducting trials for an implant > that would release proteins in the eyeball to offset > the damage done to retinal cells, perhaps > indefinitely. > > Tim Schoen, Director of research development for the > Foundation Fighting Blindness, said technology to > provide prosthetic sight is especially encouraging. > > "This offers great hope to individuals who have > completely lost vision," said Schoen, whose group is > not involved in the Optobionics chip. > > "We can treat these patients with gene therapy, but > once the photoreceptors die, we have to replace them > with stem cells or one of these artificial methods." > > Machelle Pardue, a researcher at Emory University and > the Veterans Administration Hospital in Atlanta who is > working with Narfstrom on the Optobionics chip, > said she's glad she's not the only one doing such research. > > > > __________________________________________________________ > Yahoo! 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