Synonyms that are in the dictionary are marked in green. Synonyms that are not in the dictionary are marked in red.
Antonyms that are in the dictionary are marked in green. Antonyms that are not in the dictionary are marked in red.
Itachi had awakened the Mangekyou Sharingan in both his eyes, which allowed him to use the Susanoo.
Source: https://gamerant.com/naruto-akatsuki-members-strongest/
The Susanoo or God of the Sea and Storms technique is generated by both eyes, and it makes use of the Mangekyou Sharingan form so as to create a sword-wielding specter that will surround the user.
Source: https://gamerant.com/naruto-the-inspiration-for-itachi-uchihas-doujutsu/