Princeton University develops high-tech 3D printing contact lenses

You may need to turn on the TV or go to the cinema to watch movies, but in the future, you can move the image to your eyeballs by wearing high-tech contact lenses. The researchers said: "Contact lenses printed by 3D printing technology can also display wearer health data." American scientists have taken the first step because they have successfully created a 5-layer contact lens using a 3D printer. Michael McAlpine led a researcher at Princeton University to build a sophisticated machine to develop and make new lenses.
3D printers usually use metal or polymer materials, and then the computer code tells the machine the final size and appearance of the final product to finally form the object. But this kind of machine is more complicated. Dr. McAlpine said that the most challenging part of the project is to find the best chemical solvent. The team must also develop a way to adapt the lens to different shapes of eyeballs. To do this, they need to constantly scan the lens, checking to match the wearer's final shape.

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