B15-a6 - Wearable Contact Lens Ultrasound Retinal Stimulation for Noninvasive Vision Restoration
- Event
- 2025 ICU PADERBORN - 9th International Congress on Ultrasonics
2025-09-21 - 2025-09-25
Paderborn - Band
- Lectures
- Chapter
- B15-a - Ultrasound Transducers for Medical Uses
- Author(s)
- C. -F. Chang, J. Ji, Y. Zeng, B. Liu, J. Zhang, X. Sun, C. Gong, H. R. Chabok, Q. Zhou - University of Southern California, Los Angeles (USA)
- Pages
- 182 - 185
- DOI
- 10.5162/Ultrasonic2025/B15-a6
- ISBN
- 978-3-910600-08-9
- Price
- free
Abstract
This work presents the first wearable, contact lens-compatible ultrasound neuromodulation device capable of precise retinal stimulation without surgery. A novel wearable contact lens-shaped ultrasound array is designed for potential vision restoration in retinal degenerative diseases through noninvasive neuromodulation. The array is integrated by 64 elements on a biocompatible substrate, aiming for ~100–150 μm resolution. The fabrication process utilizes a 3D-printed mold, silver epoxy, flexible PCB, and Parylene-C coating to create a device operating at 19.5 MHz with over 50% bandwidth. The Field-Programmable Gate Array (FPGA) control supports real-time programmable patterns for high-precision neuromodulation. In contrast to invasive options, this approach minimizes risks and enhances resolution, showing great potential in vision therapy.