[HN Gopher] Fish eyes grown in a petri dish from embryonic stem ...
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       Fish eyes grown in a petri dish from embryonic stem cells
        
       Author : rbanffy
       Score  : 50 points
       Date   : 2021-09-04 11:37 UTC (11 hours ago)
        
 (HTM) web link (phys.org)
 (TXT) w3m dump (phys.org)
        
       | andy_ppp wrote:
       | How far are we off being able to regrow broken organs in humans?
       | To be honest I guess doing Eye transplants is beyond our current
       | ability even if we could grow them, but new hearts livers and
       | kidneys could be very useful.
        
         | epmaybe wrote:
         | I'd imagine the limiting factor in all of these is still
         | functionality of these organs. We can reorganize them to look
         | somewhat like the actual organ (like in the linked article),
         | but whether or not the organ functions the same is still under
         | much investigation.
        
           | phendrenad2 wrote:
           | Also how do you connect up the nerves? A heart transplant
           | works because the heart is basically self-regulating. But the
           | eye needs thousands of nerves to connect to the brain to be
           | useful.
        
         | TaupeRanger wrote:
         | Cutting edge work in bioelectrical fields (see Michael Levin's
         | lab) looks quite promising, although quite a long way off in
         | terms of human applications. They can do all sorts of seemingly
         | miraculous things in planaria.
        
           | akoluthic wrote:
           | Levin gave a mind boggling talk about some of their work a
           | couple years ago: https://youtu.be/RjD1aLm4Thg
        
       | wolfram74 wrote:
       | As someone with moderate keratoconus[0] and a belling reflex[1]
       | that makes the opthamologist go fetch the residents because they
       | need to see it, I am always looking forward to developments that
       | might let me get new dang eyes, or at least replace my corneas.
       | 
       | [0]https://en.wikipedia.org/wiki/Keratoconus#Signs_and_symptoms
       | [1] https://en.wikipedia.org/wiki/Bell%27s_phenomenon
        
         | epmaybe wrote:
         | I'm sure you've seen a large volume of research involving cross
         | linking and such related to keratoconus. It's my hope that in
         | the future we find patients like yourself well before they have
         | progressed to later stages and have therapies affordable enough
         | to prevent further progression.
         | 
         | Edit: I forgot to mention but newer techniques for corneal
         | transplant are within reach, and current techniques in the
         | right hands are very successful at giving usable vision.
         | 
         | Best of luck!
        
       | hungryforcodes wrote:
       | Nexus-6 right around the corner then.
        
         | wizardforhire wrote:
         | "If only you could see what I've seen with your eyes"
        
       | dukeofdoom wrote:
       | How long before we get to have third eyes. Red dots are so
       | inferior. I just find it amazing that this was visioned centuries
       | ago by some drunk medieval monk, depicting demons in his
       | sketchbook with a quill pen.
       | 
       | https://www.google.com/search?q=medieval+demons&hl=en&tbm=is...
        
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       (page generated 2021-09-04 23:00 UTC)