Non-visual photopigments effects of constant LED light exposure on the inner retina of Wistar rats

BENEDETTO M; GUIDO ME; CONTIN MA

Frontiers in Neurology

Frontiers Media S.A.

Año: 2017

1664-2295

he retina is part of the central nervous system specially adapted to capture light photons and transmit this information to the brain through photosensitive retinal cells involved in visual and nonvisual activities. However, excessive light exposure may accelerate genetic retinal diseases or induce photoreceptor cell death, finally leading to retinal degeneration (RD). Light pollution (LP) caused by the characteristic use of artificial light in modern day life may accelerate degenerative diseases or promote RD and circadian desynchrony. We have developed a working model to study RD mechanisms in a low light environment using LED sources, at constant or long exposure times under LP conditions. The mechanism of photoreceptor cell death is still not fully understood. Our main goal is to study the biochemical mechanisms of RD. We have previously demonstrated that constant light (LL) exposure to white light emitting diodes (LED) produces a significant reduction in the outer nuclear layer (