Tag: retinal biochemistry

November 22, 2025 / Mohammed looti

PIGMENT BLEACHING

Introduction to Pigment Bleaching Pigment bleaching, in the context of visual science, refers specifically to the profound molecular alteration undergone by rhodopsin, the primary photopigment located within the rod photoreceptor cells of the retina. This critical biological process is initiated exclusively upon the absorption of photons, representing the very first step in the complex cascade […]

November 11, 2025 / Mohammed looti

PIGMENT REGENERATION

Introduction to Pigment Regeneration Pigment regeneration is a fundamental biological process vital for the continuous operation of the visual system, specifically ensuring the rapid recovery of light sensitivity following exposure to bright light. This process is defined as the reconstitution of functional rhodopsin after the photopigment has undergone bleaching. Rhodopsin, the primary light-sensitive pigment found […]