Vincent's NT Word Studies
3. A vision. See on ch. viii. 31.Evidently (fanerwv). Better, clearly or distinctly, as opposed to a fancy.
Robertson's NT Word Studies
10:3 {Coming in} (eiselqonta). Ingressive second aorist active participle, not present. So punctiliar, "saw come," not "saw coming." So also "say" or "speak," not "saying." Luke repeats the account of this vision to Cornelius twice (#10:30; 11:13) and also the story of the vision to Peter (#10:1-16,28; 11:5).