Sasuke Uchiha fans were dealt with a major blow in the most recent Boruto manga chapter 53, with the young pupil of Sasuke taking out the eye of his master. Yes, this means that Sasuke’s Rinnegan is gone and likley meaning that he has been dealt a massive power decrease for the remainder of the series.
Boruto wasn’t in control of his body, with Momoshiki taking control and attacking Sasuke who had his guard down. Clearly Momoshiki wanted to deal some damage to the Naruto & Sasuke duo, with the Rinnegan being his best option for a quick attack.
Many fans are trying to figure out possible ways for Sasuke to regain his Rinnegan. One of the most popular theories floating around is finding a replacement Sharingan from the Uchiha Shin corpse and then using Senju/Hashirama cells from to awaken another one.
This theory works well, as the Boruto Naruto Next Generations series has been littered with the use of the First Hokage’s cells after the end of the previous ninja war. However, there is another easier theory that might be a possibility as well.
The other option is for the legendary medical ninja in Tsunade or her pupil, who is said to have surpassed her, Sakura to heal his eye. Remember, we don’t really know how bad the damage is, all we know is that Sasuke’s been stabbed in the eye. If it was just a graze, it’s possible for it to be repaired through medical Ninjutsu.
Then we have Naruto who we know has incredible healing abilities, which he was given from the Sage of Six Path. All of which might be able to look at his eye and potentially mend the damage. However, Naruto is probably Sasuke’s best chance, as his friend was even able to save Might Guy with his healing abilities after he used the last Inner Gate, which should have resulted in death. We also know that Naruto’s healing abilities have improved since that time as well, which we got to see against Uchiha Shin.