Xpanceo has unveiled a range of four smart contact lenses. The computer company’s prototypes could become real products in the future, and include a biosensing lens, a holographic smart contact lens, a transparent electronics lens and a nanoparticle-infused lens for super vision. Xpanceo has claimed each lens is as thin as traditional contacts, and they all come with their own capabilities. For example, the holographic lens essentially channels mixed reality (XR). Meanwhile, the biosensing lens could be used to measure eye pressure and even help detect potential glaucoma issues. The company to…