A.T. Robertson Commentary Acts 22:13

"came unto me, and standing by me said unto me, Brother Saul, receive thy sight. And in that very hour I looked up on him." — Acts 22:13 (ASV)

I looked up on him (αναβλεψα εις αυτον). First aorist active indicative and same word as αναβλεψον (Receive thy sight). Hence here the verb means as the margin of the Revised Version has it: "I received my sight and looked upon him." For "look up" see Joh 9:11.