where ravers are using a fluid known as fluoroscein to make their contact lenses turn green under ultra-violet light. The South African Optometric Association issued the warning on Monday.

Nanoparticle-infused contact lenses can transform infrared radiation into different colours of visible light, potentially ...

Researchers have developed a contact lens that ... wavelengths of light in the optical spectrum. Researchers found that the dye blocked the band that lies between the red and green wavelengths ...

Contact lenses capable of allowing ... are responsible for the perception of red light. Protans find it difficult to distinguish between red and green colours, and also between blue and green.

Physicists at ETH Zurich have developed a lens that can transform infrared light into visible light by halving the wavelength ...