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.