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Need A New Retina? Look No Further

Posted by simoniker on from the g'kar-deluxe-model dept.

wap writes "Restoring sight to the blind is a Bibical miracle, a sign of divine powers. Now it is being tested at the Boston Retinal Implant Project, with some very limited success, according to Technology Review. They only have fifteen electrodes implanted, but it's a start. Great quotes: 'The eye doesn't like stuff inside it, that's why it doesn't have a zipper.' Will artificial eyes and retinal replacements someday be as good as good human eyes?"

24 of 310 comments (clear)

  1. As good??? by Vo0k · · Score: 5, Insightful

    Heh, they will be 100 times better.
    Extended spectrum, nightvision, antiblinder, zoom, the possiblities are unlimited!

    --
    Anagram("United States of America") == "Dine out, taste a Mac, fries"
    1. Re:As good??? by catwh0re · · Score: 5, Funny
      I'm imaginging bad webcam quality eyes. Then people quoting back and forth, "oh you got crap logitech eyes, you should have bought iSight eyes"....

      5 months later it'll be deemed that our eye sight can be tapped under the PATRIOT act and similar.

    2. Re:As good??? by cs02rm0 · · Score: 5, Interesting

      Aren't people using retinas for developing biometric identification? I wonder what the consequences of this would be ...DoS a system with a bunch of people with the same retinal scans?

      I know with the iris they can measure the amount it constantly expands and contracts by to verify it's not a contact lens or similar. I presume though when they reach the stage of replacing the whole eye they'd be able to even fake that.

    3. Re:As good??? by dmayle · · Score: 4, Insightful

      5 months later it'll be deemed that our eye sight can be tapped under the PATRIOT act and similar.

      printf("%s",szDeity) that should have been modded insightful. It actually makes me think of Minority Report, and how it's illegal not to have your own eyeballs. This sort of stuff will happen if we let it...

    4. Re:As good??? by wowbagger · · Score: 4, Insightful

      Actually, the raw data you get from a CCD is better than the raw data you would get from the back of the human retina. The retinal is covered with blood vessels, has a big hole in it (the blind spot), had a great deal of noise (phosphene activity).

      However, the nerves just after the retina, plus the optic nerve, plus the visual cortex, do a HELL of a lot of signal processing - removing the fixed imperfections like the blind spot and the blood vessels, using the dithering created by the small jittering of the eye to increase spatial resolution, averaging out the random phosphene activity.

      IF you could get the same spatial resolution coupled into the retina, you could improve vision. However, that is a BIG IF - getting the millions of electrodes into the eye and coupled to the nerve cells, giving the correct voltage levels and firing patterns, without destroying the nerves by releasing metal ions or overvoltaging them, without provoking an immune response - quite a task.

      Now, the question that I have is the plasticity of the brain - consider this: imagine the above difficulties are resolved. Now, instead of using a CCD array that approximates human normal vision by using RGB, what if you made an imaging element that generated RYGCBM - instead of three response curves you use six to increase the color-space resolution. Now, normally our brains learn to parse the basically RGBY data from the eye (the rods just return luminance data). Suddenly, the brain is getting a different set of signals. Is the adult brain plastic enough to learn to process this data at all? What about a child's brain?

      --
      www.eFax.com are spammers
  2. Human Augmentation by Devar · · Score: 5, Interesting

    I'd love to keep one eye, probably my 'good' eye, after testing to see which is the best, and modify the other to give retinal overlay data. You could look at an object and it would draw an overlay and data on it. Also, the ability to turn this overlay on or off! How about zoom, or freeze frame capabilites all without having your eyes look any different than they would naturally.
    I know it's a long way off, but that kind of visual enhancement would be awesome. And expensive. And I want it. :)

    --
    It's a Bagel.
  3. More info by caitsith01 · · Score: 4, Informative

    Some info about the various types of bionic eyes currently being built can be found on Wired.

    Brain implant anyone?

    --
    Read Pynchon.
  4. Where's Captain Cyborg? by leeroybrown · · Score: 4, Funny

    15 electrodes implanted in someone's boday and not a sign of Kevin Warwick. Perhaps we'll get some actual research with scientific basis for a change.

  5. I must be a Luddite... by CountBrass · · Score: 4, Interesting

    But I simply cannot imagine having any of this kind of enhancement: ever. I might consider it if say it was to restore something I'd lost completely (like my sight) but as an enhancement? No I don't think so. But then perhaps I'm a luddite: I haven't seriously considered laser eye surgery, partly because it's risky (however small) but mostly because my current eyeballs + glasses work just fine.

    And as a humorous aside: how long do you think it would be before scumware companies worked out how to spam you new implants? "I ploughed into that part of school children because I was distracted by the advert for cheap viagra my retinaly implants I had just received".

    --
    Bad analogies are like waxing a monkey with a rainbow.
    1. Re:I must be a Luddite... by vofka · · Score: 4, Informative

      The night vision problem is caused by the way the surgery is performed, and it depends on which type of surgery is carried out. The problem that is caused is a "starburst" effect around the point where the front of the eye is opened and re-sealed, or around the points where modifications have been made to the eye.

      Usually these effects wear off after a couple of weeks, and some people never experience them at all, but for a minority of patients, they are left with a permanent "starburst" effect, which is worst in any high-contrast light-on-dark situation, such as driving at night.

      The problem is serious enough that some governments have banned any person who has had laser eye surgery from driving at all - which is annoying for those who had their vision corrected to bring it into the range acceptable for driving in the first place!

      --
      Disclaimer: I meant what I thought, not what I wrote! What? You can't read my Mind? Oh dear!
    2. Re:I must be a Luddite... by nwbvt · · Score: 4, Insightful
      " I might consider it if say it was to restore something I'd lost completely (like my sight)"

      Well thats sort of what they are for.
      Thats like me saying I cannot imagine using crutches, ever, though I might consider them if I had broken my leg.

      Leave it to /. to make research restoring sight to the blind an issue primarily about turning human beings into a race of cyborgs.

      --
      Mathematics is made of 50 percent formulas, 50 percent proofs, and 50 percent imagination.
  6. Gives a whole new meaning to... by mrjb · · Score: 4, Funny

    "I can't see a thing without my glasses!"

    --
    Visit http://ringbreak.dnd.utwente.nl/~mrjb/growingbettersoftware to download your free copy of the book
  7. Minority Report and the Future by KageMonkey · · Score: 4, Insightful

    Will artificial eyes and retinal replacements someday be as good as good human eyes?

    Reminds me of the scene where Tom Cruise went to get his eyes replaced in the Minority Report. Nevertheless, the question that "will be as good as someday?" is somewhat pointless, because we all know that as technology advances, will ALWAYS be as good as in the future. Unless we blow ourselves up, I am certain that we will have eye implants that gives humans super-vision, as well as being able to see-through walls, amongst other goodies. The better quesion is, how long will it take for technology to get there.

  8. You mean DIGITAL zoom by caitsith01 · · Score: 5, Insightful

    999X DIGITAL ZOOM! Actually creates data out of nothing WHILE YOU ARE ZOOMING! Who needs those fancy optics and lenses and whotnot?! DIGITAL is part of the WORLD OF TOMORROW!

    Seriously, though, without an extra lens how could it be anything but 'digital zoom' (i.e. 'magnification')?

    On the other hand, most people nowadays appear to be dumb enough to buy anything so long as it is digital or contains the prefix i- or e-, so maybe we can just market these as "eYes : now with DIGITAL zoom."

    --
    Read Pynchon.
    1. Re:You mean DIGITAL zoom by LostCluster · · Score: 4, Insightful

      There seems to be a segment of the marketplace that loves the word "digital" thinking it must mean "better technology" which is true most of the time, but there are some things that are just meant to be done in analog sound amplification and image magnification being two of the biggest examples.

  9. I don't see what the big deal is... by Anonymous Coward · · Score: 4, Funny

    Really, I don't. =)

  10. 15% of the worlds blind by Anonymous Coward · · Score: 4, Insightful


    could be cured for the cost of 1 Nuclear submarine, but as we are not serious about curing blindness we would rather have multiple subs and lots of blind people

    http://www.mercyships.org

  11. Legal issues with artificial eyes... by Anonymous Coward · · Score: 5, Interesting

    The problem with having a camera for an eye is that if they got good, they most certainly would cause enromous legal issues. You could conceivably record your own sight, which would run afoul of various copyright, privacy, and wire-tap laws in the US and abroad. More so if you broadcast them, or if security/access control was in place.

  12. Missing Zoom function by waynemcdougall · · Score: 4, Funny

    Lister: Any problems?
    Kryten: Well, just one or two. In fact I've compiled a little list if you'll indulge me. Now then, uh, my optical system doesn't appear to have a zoom function.
    Lister: No, human eyes don't have a zoom.
    Kryten: Well then, how do you bring a small object into sharp focus?
    Lister: Well, you just move your head closer to the object.
    Kryten: I see. Move your head ... closer, hmm, to the object. All right, okay. Well, what about other optical effects, like split screen, slow motion, Quantel(tm)?
    Lister: No. We don't have them.
    Kryten: You don't have them -- just the zoom? Hmm. Well, no, that's fine, that's great, no, no, that's really great, that's great.

    --
    Recycle PCs and build a wireless community network www.hillsborough.org.nz
  13. Example of overlay data by zonix · · Score: 4, Funny

    1) Serve the public trust
    2) Protect the innocent
    3) Uphold the law
    4) Secret

    z
    --
    What would an EWOULDBLOCK block, if an EWOULDBLOCK could block would? -- me
  14. Only for people who could see at some time by Jeff+Kelly · · Score: 5, Informative

    Just some clarification.

    These devices won't restore eyesight to people who were born blind. Only those who, at one time in their life, actually could see will profit from such technical replacements.

    When you are born you are nearly blind. It takes four to six years for the visual cortex to develop fully. After the age of six this development stops and thats the end of it.

    If you are born blind then the cortex will not be trained and no magic eye surgery will restore your vision, because after the age of six the visual cortex will no longer adapt to the new situation.

    Even if your eyes are restored to 20/20 vision you will not see a thing because your vision center doesn't know how to interpret the pictures. So these kinds of surgery will only help people which went blind and not those who were born blind. (Still cool stuff)

    BTW. It is the same with deafness.

    1. Re:Only for people who could see at some time by jstave · · Score: 5, Interesting
      I read an article (I believe it was in Science News) indicating that blind-from-birth people actually used their visual cortex to process sounds. Basically we use it to build up our model of the world around us.

      I'm not saying it could be retrained to process visual information after a lifetime of other use, I just thought its cool how the brain can effectively rewire itself. Kinda like detaching the speakers from your computer and having the sound card automatically start processing graphics (or something)

    2. Re:Only for people who could see at some time by misterpies · · Score: 4, Interesting

      There's actually an article (subscription) on this in this week's edition of Nature. It's about a guy who was blind from birth but - at the age of 52 - received a corneal graft that enabled him to see for the first time.

      The psychologists were dumbfounded to discover that he could read the time on clocks and even the titles of books straight away, without any learning. It turned out that he had a "blind" watch (a clock without a cover over the face, so he could tell the time from feeling the positions of the fingers), and at school he'd been taught to recognise capital letters by their shape. Somehow this shape information was transferred from touch into sight ("cross-modal transfer").

      However, when it came to objects that were out of his tactile knowledge, he was unable to respond to them properly - e.g. he had no way of estimating the distance of any object further away than the length of his arm, and pictures and photographs were just meaningless blobs of colour.

      --
      The author of this post asserts his moral rights.
  15. "Common sense" health modification - not by hab136 · · Score: 4, Insightful
    Dude, I don't think it will be automatic. Remember, circumcision has been around for thousands of years, and even this common sense health modification doesn't get done on all newborn males automatically.

    Common sense isn't. Circumcision is not only unecessary, but risky and detrimental to one's health.

    The only reason to circumcise is religous - there is no medical reason, and there are good medical reasons not to.

    There is no extra care required to be uncircumcised - basically, leave it alone, wash the outside (as you would circumcised).

    http://www.cirp.org/

    http://www.sexuallymutilatedchild.org/