Aside from his own Six Tomoe Rinnegan, the eyes he currently possessed or could call upon amounted to two pairs of Rinnegan—the pair belonging to Madara Uchiha and Karin's pair—a pair of Tenseigan, a pair of Red Dragon Eyes, a pair of Eternal Mangekyo Sharingan, Shisui's single Mangekyō Sharingan, and Obito's single Mangekyō Sharingan.
These were all Kekkei Genkai based on ocular jutsu with power at least on the level of the Mangekyō Sharingan. He hadn't counted ordinary Three-Tomoe Sharingan or Ketsuryūgan.
The eyes with the greatest ocular power among them were Madara Uchiha's Rinnegan and the Tenseigan belonging to Neji and Kimimaro.
In terms of individual strength, Madara Uchiha's eyes—which had once evolved into a Three-Tomoe Rinnegan—were undoubtedly the most powerful.
But Neji and Kimimaro's Tenseigan were unusual. They could resonate with the Giant Tenseigan on the moon, and once that resonance began, their ocular power would instantly surpass Madara Uchiha's Rinnegan.
Karin's Rinnegan also had tremendous ocular power, but its development was somewhat lacking. She hadn't yet awakened the Space-Time Dojutsu hidden within it, so its ocular power fell a little short of Madara Uchiha's Rinnegan.
Next came the Eternal Mangekyō Sharingan belonging to Nameless.
However, Nameless had already implanted First Hokage cells, and Power of All Things was continuously being refined within her body. Her Eternal Mangekyō Sharingan was clearly not her endpoint; she had the potential to reach the Rinnegan.
After that came Yakumo's Red Dragon Eyes.
The Red Dragon Eyes were a new Kekkei Genkai based on ocular jutsu that Shinji had forcibly created by using his Susanoo Lamp to fuse the Red Eye and Ketsuryūgan.
Compared with ordinary Kekkei Genkai based on ocular jutsu, the Red Dragon Eyes could easily crush them.
But compared with the Rinnegan and Tenseigan, the Red Dragon Eyes were