"Andrew Shannon, 49, ruined the Claude Monet masterpiece hanging in the National Gallery Ireland in 2012 by attacking it in front of stunned art lovers.
On Thursday a court finally brought him to justice for his crime.
The famous painting, titled Argenteuil Basin with a Single Sailboat, was left with a large hole through the middle of it.
It is valued at $10 million (£7.8 million).
Mr Shannon told the police after his arrest he committed the thoughtless act of vandalism in an attempt to ‘get back at the state’ however while in court he tried to play it off as an accident by reportedly claiming he ‘felt faint’ and fell into the painting.
He was sentenced to five years in prison, and will not be allowed in any gallery for 15 months after his release.
Upon raiding Mr Shannon’s Dublin home after his arrest, police found nearly 50 stolen items, including valuable artworks, books and antiques."