Board Thread:Naruto Discussions/@comment-26866422-20160420152937/@comment-26866422-20160420183613

Douryoku means ocular power. (as viz translated) Doujutsu means ocular jutsu. Basically the same, but i dont think so it is exactly the same. Doryoku means everything connected to eye powers. I dont think it is neccessary to distinguish both as separate but to be completely correct:

Doryoku executes doujutsu. Like Sharingan (doryoku) executes Susano'o (ninjutsu, doujutsu), Tsukuyomi ( Genjutsu, Doujutsu)...

Sharingan itself isnt doujutsu, since there isnt any jutsu named sharingan.

But then again i might be completely wrong. Too bad there isnt other ocular power, beside known ones.