Retinal phototoxicity and the evaluation of the blue light hazard of a new solid-state lighting technology.

ABSTRACT: Exposure Limit Values (ELV) for artificial lighting were defined in order to prevent light-induced damage to the retina. The evaluation of the lighting devices include the correction of their spectra by the B(λ) function or blue light hazard function, representing the relative spectral sensitivity of the human eye to the blue light. This weighting function peaks between 435 and 440 nm. In this study we evaluate a new generation of light emitting diode (LED), the GaN-on-GaN (gallium nitride on gallium nitride) LED, that present an emission peak in the purple part of the spectrum. Wistar rats were exposed to GaN-on-GaN and conventional diodes at different retinal doses (from 2.2 to 0.5 J/cm²). We show that GaN-on-GaN diodes are more toxic than conventional LED for the rat neural r

SUBMITTER: Jaadane I 

PROVIDER: S-EPMC7174369 | biostudies-literature | 2020 Apr

REPOSITORIES: biostudies-literature