title: The effect of bleaching and backgrounds on pupil size.
mesh_terms: D000221:Adaptation, Ocular; D000886:Anthropometry; D003623:Dark Adaptation; D004106:Dilatation; D006801:Humans; D008027:Light; D009900:Optic Nerve; D011680:Pupil / Q000033:anatomy & histology*; D012168:Retinal Pigments / Q000032:analysis
chemical_list: D012168:Retinal Pigments