Theophylact of Ohrid

And the soul of the blind man was prudent, for after his healing he did not leave Jesus, but followed Him. And allegorically one may understand this as follows: Jericho signifies a low place, that is, the world; the blind man sitting here is an image of human nature, which was once adopted by God, above every earthly honor; and it cried out to Christ as He passed through Jericho, that is, this world. And Christ had mercy on it and saved it by its faith, when it cast off the old garment of sin. …

Commentary on Mark ↗

Clement of Alexandria

The commandment of the Lord is far-shining, "enlightening the eyes." Receive Christ, receive sight, receive thy light, "In order that you may know well both God and man." Praise and declare to me Thy Father God; Thy utterances save; Thy hymn teaches that hitherto I have wandered in error. …

Exhortation to the Heathen ↗

Gregory the Dialogist

To this light, indeed, faith is the way. Hence rightly it is immediately answered to the blind man as he is enlightened: "Receive your sight, your faith has saved you." He sees and follows who puts into practice the good that he understands. But he sees and does not follow who indeed understands the good, but disdains to do good works. …

Forty Gospel Homilies, Homily 2 ↗

Bede

Therefore let us also imitate him, let us not seek for riches, earthly goods, or honours from the Lord, but for that Light, which we alone with the Angels can see, the way to which is faith; wherefore also Christ answers to the blind man, Thy faith hath saved thee. But he sees and follows who works what his understanding tells him is good; for he follows Jesus, who understands and executes what is good, who imitates Him, who had no wish to prosper in this world, and bore reproach and derision. …

Catena Aurea by Aquinas ↗