Itako - Spirit mediums of Japan, strictly blind women

"Itako , also known as ichiko (市子) or ogamisama (オガミサマ), are blind women who train to become spiritual mediums in Japan. Training involves severe ascetic practices, after which the woman is said to be able to communicate with Japanese Shinto spirits, kami, and the spirits of the dead. Itako perform rituals tied to communication with the dead and divination. The practice has been on the decline, with only 20 living itako in Japan, all more than 40 years old. - Wikipedia"