Gordon Wood has described his three years in a NSW prison as a "living death" during which he was assaulted by a guard and king hit by a notorious killer.
In a witness statement filed as part of his lawsuit against the state, Mr Wood said a vindictive guard smashed his glasses and an infamous rapist and killer knocked him unconscious in the prison yard.
"Gaol must be unbearably difficult even if one is guilty, but as an innocent man it was unimaginable," he said in the statement, which was released by the NSW Supreme Court on Tuesday.
"Doubly so for me having been falsely accused and wrongfully convicted of killing the woman I loved and intended to marry."
Mr Wood spent just over three years in Goulburn's maximum security prison after he was convicted in late 2008 of murdering his model girlfriend Caroline Byrne in 1995.
It was alleged he threw the 24-year-old off a cliff at notorious Sydney suicide spot The Gap.
Mr Wood was released in 2012 after the conviction was overturned by the NSW Court of Criminal Appeal.
He said in prison he lived in constant fear of guards who dished out "therapy".
His eventual freedom couldn't be described as a happy event, but was a relief, he said.
However, he struggled to cope with life after jail and "quickly sank into a deep depression" for which he is still receiving treatment.
He said the ongoing battle to clear his name, now "forever tainted", continues to take its toll.
A 2014 police submission to have him retried confirmed "that for the rest of my life I will live under the constant threat of police trying to find a way to convict me for a crime that never happened", he said.
Mr Wood added that he's unable to work in his field and nevertheless his mental and emotion health is "unsuited to the pressures of high-end business and finance".
While public doubts about his character and reputation remain, "any future life I am able to build will almost certainly require me to relocate abroad", he said.
Mr Wood is claiming damages and costs on grounds including malicious prosecution and false imprisonment, saying the pursuit of him has cost him millions.
A hearing is under way in the NSW Supreme Court.