Jamieson, Fausset and Brown on Mark 8:23

23. And he took the blind man by the hand, and led him out of the town--Of the deaf and dumb man it is merely said that "He took him aside" (Mr 7:33); but this blind man He led by the hand out of the town, doing it Himself rather than employing another--great humility, exclaims Bengel--that He might gain his confidence and raise his expectation.

and when he had spit on his eyes--the organ affected--See on Mr 7:33.

and put his hands upon him, he asked him if he saw aught.