Dōjutsu

are genetic ninja abilities that utilize the eyes, enabling them to percieve chakra in some form or another. Being a byproduct of specific kekkei genkai, dōjutsu are not classified as one of the major jutsu types. They do not require hand seals to use and sometimes facilitate in the use or defense against genjutsu, taijutsu and ninjutsu and then defeat his or her opponent. All known dōjutsu also provide the user with some otherwise incapable ability, such as an extended field of vision or predictive capabilities. The use of Dōjutsu consumes chakra.

Appearantly, it is fairly common for Dōjutsu eyes to be transplanted into people without the kekkei genkai, either through battle spoils, by choice, or by force. An example of this would be Kakashi Hatake who recieved a Sharingan right eye as a gift from his friend Obito Uchiha, and Ao, a Kirigakure shinobi who had a Byakugan eye transplanted into his right eye from a defeated member of the Hyuga clan.

Possible Dōjutsu
In Naruto Shippūden the Movie, a high priestess from the Land of Demons named Shion has the ability to predict a person's death. When she sees a prediction of someone's death, her eyes take on a flourish design, which makes it a possible Dōjutsu.