A bus driver was temporarily blinded when yobs shone a laser in his eye while he was parked at Greyfriars Bus Station.
National Express driver Brian Smith was passing through Northampton on Sunday, October 28, when the incident happened.
He saw two boys on the back of a Stagecoach bus in front of him, when he felt a flash and realised he could not see.
Passengers were forced to disembark and wait for several hours for a replacement driver.
Mr Smith, of Runcorn, was driving the Southend to Liverpool bus service when the incident happened at about 1.30pm.
He has suffered a slight burn to his eyelid and is still not back at work.
Mr Smith said: “There were two lads on the back seat. I just felt a flash and I couldn’t see out of my right eye. I can’t go to work now and I’ve got to go to see a specialist.
“I’ve been driving buses for 15 years and nothing like this has happened before.
“These kids think they are smart, but it would have been a different story if I had crashed into a lamppost or car with 40 people on board. It caused a great inconvenience and they are lucky I didn’t crash.”
Anyone with any information can call Northamptonshire Police on 101.
A Northamptonshire Police spokesman said: “An incident was reported to us in relation to the shining of a green laser onto a bus in Greyfriars bus station. “We are investigating and would like to remind people of the seriousness of using lasers. Shining lasers in people’s faces can cause serious injury. We encourage people who notice anyone using a laser in this way to report it to us by calling 101. “We will look to prosecute those found to be responsible.”