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Headlight Contact Lenses

Light up in dark
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Ever dropped a contact lens in a dark place, and tried to find it in a futile, vaine and ultimatly fruitless attempt? Me neither, but i have an idea that could help us all in this situation: Someone recently submitted an idea for a light-up golf ball, which lights itself up when lost. Keep this in mind while we consider the following - We ALL know that blinking compresses and releases the lacrimal sac, thus creating a suction that pulls excess moisture from the eyes surface. This knowledge could be used to create a device which lights up contact lenses when they drop to the ground. Nano bots within the contact lens would detect a lack of "eye juice", caused when they fall to the ground (air friction would rid the lens of "eye juice"), and light up, helping the visually impaired to find the lost lens. The fact that the user would be blind without the lense I will leave to someone else to solve. This idea could be used in future to create "People Headlights", which would use similar Nanobots to detect lack of light, causing freakish looking lights to emanate from the users eyeballs. The fact that this would again blind the user is not my problem.
rikolas, Oct 09 2001

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       Nano bots? Get ready to be pummelled with fish. Good idea, otherwise - and so long as it's dark when you lose your lenses.   

       Chemistry is a much older and distinguished science. Perhaps you could engineer your idea so that the chemical which makes these lenses glow are retarded by "lacrimal sac" juice. That sounds (marginally) more plausible than pulling the magic nano bot card.
sdm, Oct 09 2001
  

       Nanobots = leprecauns.   

       There's plenty of chemicals that change colour when in the presence of water; might there not be one that fluoresces. That's all that would be required.   

       Alternatively, have them show up under UV (incidentally protecting your eyes from UV rays), and when you lose them, dim the lights and get out a UV torch.
pottedstu, Oct 09 2001
  

       There's an easier way:   

       Turn off all the lights in the room, and scan the floor with a flashlight set on the floor. The lens will light up like a diamond.   

       This works for broken glass, too.
seal10, Oct 09 2001
  

       Martha Stewart's technique might work in Martha Stewart's house, but in anyone else's you're just likely to end up with an big pile of dirt clogging the end of the pantyhose.   

       Anyway, yeah, nanotech blah. You might as well have your nanobots fix your vision and skip the contact lenses entirely.
egnor, Oct 09 2001
  

       I'm waiting for someone to post the idea:   

       Name: Nanobot constructors   

       Summary: Build really tiny robots   

       Description: Current technology doesn't allow the construction of really tiny robots or "nanobots" (see link), despite the many uses I could invent for them. So wouldn't it be a good idea if we invented some really small robots that could build nanobots? We could call them "picobots".
pottedstu, Oct 09 2001
  

       It'd get boned, because not only can they not build nanobots, they can't build anything smaller than them to build them either.
StarChaser, Oct 12 2001
  

       Nanobots in contact lenses? Totally impractical price wise, not to mention impossible.
koolcj291, Jan 22 2004
  
      
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