Creighton was riding at Warrnambool on Saturday when was unseated as his horse The Walrus stumbled early in the race.
He was initially conscious but his condition deteriorated at Warrnambool Base Hospital and he was transferred to Melbourne for further treatment.
He remains in intensive care following wrist surgery, Racing Victoria said.
Creighton was formerly based in Britain and rode big winners for trainer Mick Channon.
Former England footballer Channon tweeted: "Some positive news about Eddie Creighton thankfully. A smashing lad."
Irish jockey Eddie Creighton is "conscious and responsive" after coming out of an induced coma following a fall at an Australian racecourse.