What Paul Thorn Was History?

Paul said, i want to tell you about my thorn. Some scholars say that it was from the blinding on the road to damascus that his eyesight never fully recovered. Luther and calvin, they identified it with a spiritual temptation that paul faced. And there is a little bit of support for this scripturally because in second corinthians 11, he mentions that, i inwardly burn. Not just persecution.