Future Sight: Infrared Contact Lenses Become Reality

Scientists in China have developed contact lenses that grant infrared vision to humans and mice without the need for bulky goggles or a power source.
The team from the University of Science and Technology of China (USTC) embedded specialised nanoparticles in flexible, transparent polymers. These convert near-infrared light (800-1600 nanometres) into visible wavelengths detectable by the human eye (400-700 nanometres).
Unlike traditional night-vision goggles, these lenses allow wearers to see infrared and visible light simultaneously. In human trials, participants detected flashing infrared signals, even with closed eyes, as the near-infrared light penetrates eyelids more effectively than visible light.
The devices were initially tested on mice, whose behavioural and neurological responses confirmed that the animals could perceive infrared wavelengths. The USTC scientists later upscaled the lenses for human use.
Although the lenses currently only work with strong infrared sources like light-emitting diodes and lack high resolution, they’re a leap toward hands-free night-vision.
To enhance clarity, the researchers also created glasses using the same technology. By engineering nanoparticles to translate specific infrared wavelengths into red, green or blue light, they added basic colour differentiation, a step toward detailed multi-spectral vision.
Lead researcher, Professor Tian Xue, was excited about the results: “Our research opens up the potential for noninvasive wearable devices to give people super-vision.”
Professor Xue envisions uses in security, medical imaging, colour-blind assistance, and more. While the technology is still in development, it brings sci-fi vision closer to reality.
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