The trend is to integrate external objects into our body.
For those who do not want to rely on contact lenses, future versions could involve lenses directly implanted within the eye, researchers added.
One possibility for advanced displays is a virtual reality (VR) system that replaces our view of the real world with computer-generated vistas. Another idea consists of augmented reality (AR) displays that overlay computer-generated images over real-world environments. However, these often require bulky apparatus such as oversized helmets.