A deification of the wise and virtuous eye of the Buddha, whose name literally means "Buddha-eye Buddha-mother". Since buddhas are 'those who are enlightened' by 'opening their eyes to the truth', Butsugen Butsumo, who 'opens people's eyes to the truth so that they may be reincarnated as buddhas', can thus be called a 'mother of Buddhas'. Her mantra is chanted at the eye-opening ceremonies of Buddhist statues.

She is generally depicted as a bodhisattva with a slight, joyful smile on her face and her hands cupped in the Hokkai mudra (also associated with Dainichi Nyorai).