Board Thread:Theories and Speculation/@comment-26367861-20160713002352/@comment-734582-20160713112430

The Uchiha's Mangekyo kekkei genkai is too deteriorated, leading to the degradation problem. After all, it simply seems the Mangekyo is unable to handle it's power, leading to eye damage. Obito's body could actually heal that damage.

If a truly pure Uchiha awoke it (e.g Indra's closest offspring) or otherwise achieved a strong enough body (e.g. by Uzumaki or Senju blood), they would likely be able to handle it.

So no, Obito's MS isn't special, he just properly heals his eye.