Luminescence-and nanoparticle-mediated increase of light absorption by photoreceptor cells: Converting UV light to visible light

We developed new optic devices-singly-doped luminescence glasses and nanoparticle-coated lenses that convert UV light to visible light-for improvement of visual system functions. Tb 3+ or Eu 3+ singly-doped borate glasses or CdS-quantum dot (CdS-QD) coated lenses efficiently convert UV light to 542 nm or 613 nm wavelength narrow-band green or red light, or wide-spectrum white light, and thereby provide extra visible light to the eye. In zebrafish (wild-type larvae and adult control animals, retinal degeneration mutants, and light-induced photoreceptor cell degeneration models), the use of Tb³⁺ or Eu³⁺ doped luminescence glass or CdS-QD coated glass lenses provide additional visible light to the rod and cone photoreceptor cells, and thereby improve the visual system functions. The data provide proof-of-concept for the future development of optic devices for improvement of visual system functions in patients who suffer from photoreceptor cell degeneration or related retinal diseases.