A groundbreaking eye-tracking system developed by researchers from Qingdao University and the Hong Kong University of Science and Technology is redefining human-device interaction. Unveiled this week, the battery-free smart contact lens harnesses energy from natural blinks to enable precise control of wheelchairs, VR interfaces, and smart systems.
The innovation uses biocompatible PDMS materials to convert eyelid friction into electrical signals, achieving 99% motion-direction accuracy without external power sources. This advancement holds particular promise for ALS patients, with lab tests demonstrating successful navigation of digital interfaces through intentional blinks.
Dr. Li Wei, lead researcher from Qingdao University, noted: 'This represents the first self-sustaining eye-tracking solution that works with natural blinking patterns. It opens new frontiers for assistive technologies and immersive computing.'
Commercial applications extend beyond healthcare, with prototype integrations already being tested in VR gaming headsets and smart vehicle control systems. The technology's lightweight design (under 1.2 grams) and continuous operation capability position it as a viable alternative to current camera-based eye trackers requiring frequent charging.
As development progresses toward human trials scheduled for late 2026, industry analysts predict this innovation could reshape the $42 billion assistive technology market while creating new standards for hands-free device interaction.
