Question: what are itachi's eyes called?
Answer: Itachi's Mangekyō Sharingan. Itachi awakened the Mangekyō Sharingan after witnessing Shisui's suicide. Its design was three spiralling curves around the pupil. With both eyes, he could use Tsukuyomi, a genjutsu that trapped opponents' minds in an illusory world, altering their perception of time.