Cyril of Alexandria

From which it is clear, that he was released from a double blindness, both bodily and intellectual. For he would not have glorified Him as God, had he not truly seen Him as He is. But he also gave occasion to others to glorify God; as it follows, And all the people, when they saw it, gave praise unto God.

Catena Aurea by Aquinas ↗

Theophylact of Ohrid

Note also the gratitude of the healed man. For he followed Jesus, "glorifying God," and disposing others to glorify Him as well.

Commentary on Luke ↗

Gregory the Dialogist

But let us now hear what happened to the blind man who was asking, or what he himself did. It follows: "Immediately he saw, and followed him." 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

And all the people, when they saw, gave praise to God. For the people gave praise to God, not only for the granted gift of light, but also for the merit of the faith of the one asking. They gave praise to God because they saw Jesus mercifully and powerfully restore light to the one asking, and acknowledged that the cry of firm faith, which rightly sought, could immediately be accomplished. Wherefore it should be noted that the Lord, appearing in the flesh, confirmed everything He taught with words by examples. …

On the Gospel of Luke ↗

Bonaventure

And immediately he saw, through the circumspection of prudence: Ephesians 5: "See, brethren, how you walk carefully"; Proverbs 4: "Let your eyes look upon what is right, and let your eyelids go before your steps." And he followed him, glorifying God, through the subjection of obedience. …

Commentary on Luke, Chapter 18 ↗