Injectable nanoparticle "solar cells" restore light sensitivity in blind retinas
DrKavner · x · 2026-10-02
An international team led by Aarhus University has developed injectable, hollow semiconducting nanoparticles that act as microscopic photoreceptors in blind eyes.
- Made of graphitic carbon nitride, 300 nm diameter, mimicking plant chloroplasts to capture visible light and stimulate nearby retinal ganglion cells — no genetic modification needed
- In blind mice with advanced retinitis pigmentosa, injection produced detectable light-induced signaling in the visual cortex and observable behavioral changes
- Unlike gene therapy or optogenetics, the approach is mutation-independent and requires no viral vectors, using surviving native nerve cells in degenerated retinas
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