Blue Light & The Retina

Photochemically-induced retinal injury is caused by the absorption of light by photoreceptors in the retina. Photoreceptors such as rod cells & cone cells convert light into electrical signals in the eye via the chemical process where Rhodopsin (an extremely light-sensitive receptor protein influential to visual phototransduction) & Blue Light collide. Normally, when light hits Rhodopsin, Rod & Cone cells bleach and becomes ineffectual until they have recovered through a metabolic process (approximately 30 minutes) called Wald’s visual cycle. This visual cycle is the biological process which converts photons, such as electromagnetic radiation (UV light & Blue Light) into electrical signals

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