Board Thread:Theories and Speculation/@comment-25132842-20180320052324

It's known that the Mangekyo Sharingan degrades the user's eyesight. It's also known that there are two methods of restoring that eyesight. One is obviously gaining the Eternal Mangekyo by transplanting another Uchiha's eyes into your own. The second is to activate the Rinnegan.

However, does the activation of the Rinnegan prevent further degradation of the user's eyesight from use of the Mangekyo Sharingan, or does it simply reset the user's eyesight at their original potential? 