A charge transfer process in the visual pigments.
D000042:Absorption; D000475:Alkenes; D000588:Amines; D000596:Amino Acids; D003545:Cysteine; D004579:Electron Transport; D005136:Eye Proteins; D006863:Hydrogen-Ion Concentration; D008027:Light; D008956:Models, Chemical; D011485:Protein Binding; D012168:Retinal Pigments / Q000096:biosynthesis*; D013057:Spectrum Analysis; D013438:Sulfhydryl Compounds; D013696:Temperature; D014466:Ultraviolet Rays
D000475:Alkenes; D000588:Amines; D000596:Amino Acids; D005136:Eye Proteins; D012168:Retinal Pigments; D013438:Sulfhydryl Compounds; D003545:Cysteine