Unlocking Vision: Solar Panels in the Retina

Revolutionising sight restoration with solar technology

Shining Light on Vision Restoration

In a groundbreaking initiative, researchers at the University of New South Wales (UNSW) are exploring the potential of implanting solar panels in the human retina to restore vision.

Dr Udo Roemer, a specialist in photovoltaics, is at the forefront of this interdisciplinary effort, collaborating with neuroscientists, clinicians, and biotech experts globally.

Powering Sight: A Solar Perspective

Dr Roemer's vision involves using solar technology to convert light entering the eye into electricity, bypass damaged photoreceptors and transmit visual information directly to the brain.

Unlike previous attempts with electrodes and wires, the proposed solution is a wireless one – a tiny, self-powered solar panel attached to the eyeball.

Beyond Silicon: Gallium's Pioneering Role

Unlike previous research focusing on silicon-based devices, Dr Roemer turns to gallium arsenide and gallium indium phosphide for their tuneable properties.

These materials, commonly used in the solar industry, offer greater efficiency for stacked solar cells, essential for stimulating neurones and creating visual fields.

Proof-of-Concept: A Glimpse into the Future

Currently, in the proof-of-concept stage, Dr Roemer successfully stacked two solar cells on a 1cm² area, laying the foundation for further advancements. The next phase involves reducing the size to about 2mm² with pixels measuring 50 micrometres, paving the way for future human trials after extensive lab and animal model testing.

Looking Ahead: Goggles as a Catalyst

Dr Roemer emphasises that, even with stacked solar cells, natural sunlight may not be sufficient. Future users might need to wear specially designed goggles or smart glasses, amplifying sunlight signals to the required intensity for reliable neurone stimulation.

As this innovative research progresses, it promises a beacon of hope for individuals with degenerative eye diseases, ushering in a new era where solar-powered sight restoration becomes a reality.