<unk>  is caused by bleaching (oversaturation) of the retinal pigment. As the pigment returns to normal, so too does sight. In daylight the eye's pupil constricts, thus reducing the amount of light entering after a<unk> . At night, the dark-adapted pupil is wide open so<unk>  has a greater effect and lasts longer.
Flash blindness
Color blindness
Tunnel vision
Red eye 
Black eye
Childhood blindness
Macular corneal dystrophy
Corneal dystrophy