A woman who was 11-years-old when she was sodomized at knifepoint in 1993 said at her attackers’ Friday sentencing that she has lived in constant fear since the horrific incident.

“I’m always looking over my shoulder,” the unnamed victim said in Manhattan Supreme Court before assailant William Dixon was sentenced to a 10- to 20-year prison term.

“It has taken so much from me. I basically had no social life,” the now-37-year-old woman said. “It affected me a lot, and I’m still very on edge going out.

“I’m very careful, wherever I go.”

Dixon was indicted as a John Doe in 2003, during the tenure of late Manhattan District Attorney Robert Morgenthau.

The now-61-year-old man was arrested on the charges in 2017, after pleading guilty to raping a 12-year-old girl in the Bronx — and his DNA came back as a match to the 1993 cold case assault.

The serial sex fiend had already served out a sentence for sodomizing an 8-year-old girl.

In September, Dixon pleaded guilty to one count of criminal sexual act in the first degree for leading the girl, with a knife to her throat, to a roof where he sodomized her.

Judge Melissa Jackson said Dixon committed a “heinous act,” noting the plea deal was offered so as not “to have her [the victim] relive the trauma she’s been through.”

Dixon’s lawyer, Michael Mandel, said his client, “has taken responsibility for his actions.”

“For more than two decades, William Dixon evaded law enforcement while this young victim agonized over whether her assailant would ever be held accountable,” Manhattan District Attorney Cy Vance said in a statement. “The defendant has finally been brought to justice and will serve a lengthy sentence for his horrific crime.”