CORAL GABLES, Fla. --

In court on Wednesday, a shooting victim faced the man who allegedly took his eyesight and killed his wife.

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"With my blindness, I will not forget about it," John Sutton said.

Garrett Kopp pleaded guilty on Wednesday to shooting Sutton and killing his wife, Susan. He will testify against Sutton's son, who prosecutors said set up the attack on his parents.

"Garrett Kopp, step back in time," Sutton said, speaking to Kopp.

Sutton recalled August 2004, when a gunman dressed in black invaded his Coral Gables home, shot and killed his wife and shot him several times, blinding him.

"I have six different wounds," Sutton said.

Kopp sneaked only sideways glances at his victim during Sutton's speech.

"You think about it," Sutton said. "During the next days, months, years – 20 years, I want you to think about what you did that night."

Kopp will have time to ponder his crime. Under his guilty plea, he will receive 30 years in prison, prosecutors said.

When asked if he thought his words affected the conscience of his wife's killer, Sutton, an attorney, said, "Good question. Who knows the mental status?"

Kopp confessed his involvement in the shootings to detectives when he was first arrested in a videotaped interrogation obtained by NBC 6.

Kopp claimed that the Sutton's son, Christopher, made him do it. He told detectives that he was scared.

"Because my life was in Chris' hands," Kopp said. "He told me he'd kill my son if I didn't – and me."

Christopher Sutton is due to go to trial in less than two weeks. He will represent himself as an attorney.

The lawyer helping Christopher Sutton with his defense said that Kopp's testimony strengthens the case against his client. However, he said that Kopp's credibility will be an issue for jurors.

"He's got some baggage," the lawyer said. "He's got a prior record."

Kopp's father, Mitch, watched his son admit to murder. He declined to comment after the guilty plea was issued.

"You can be assured that, in my blindness, every minute of every day, I will not forget you," Sutton said.

Sutton told Kopp that he would speak out against parole if he was still around in 25 years when Kopp is due for release.

He also said that he'll argue against any delay in his son's murder trial, though lawyers close to the case said Kopp's testimony could delay the proceedings for some months.

Kopp will be housed in a special safety cell in the Miami-Dade County jail system, away from other inmates.