Theophylact of Ohrid

Bethsaida and Chorazin, it seems, suffered from great unbelief, for which Christ also reproached them, as He says: "Woe to you, Chorazin! Woe to you, Bethsaida! For if the mighty works which were done in you had been done in Tyre and Sidon, they would have repented long ago in sackcloth and ashes" (Mt. 11:21). Upon the Lord's arrival here, they bring a blind man to Him. But the faith of those who brought him was not pure, which is why the Lord leads the blind man out of the village, and only then heals him. …

Commentary on Mark ↗

Bede

And they came to Bethsaida, and they brought to him a blind man, and begged him to touch him. All the diseases healed by the Lord are signs of the spiritual diseases by which the soul draws near to eternal death through sin. For just as in the deaf and mute healed by the Lord the restoration of the mind is implied of those who neither knew how to hear the word of God nor to speak, and soon in the feeding of the hungry crowd who had followed the Lord that sweetness is foreshadowed with which he usually feeds the hearts of those who …

On the Gospel of Mark ↗

Glossa Ordinaria

After the feeding of the multitude, the Evangelist proceeds to the giving sight to the blind, saying, And they come to Bethsaida, and they bring a blind man to him, and besought him to touch him.

Catena Aurea by Aquinas ↗