। ॥ १४२ ॥
In plain words
But the Self is right there — so why no knowing at all? Because that same knowing can still come through a different sense. A blind man's sight is blocked, yes — but the instant his hand touches something, he knows it's there.
Close to the Sanskrit
Even when the Self is present, why is there no [visual] knowledge? That [same knowledge] would occur through another sense-organ; in the case of a blind man, whose sight is obstructed, when there is contact of the hand, indeed there is apprehension of the object.