Following a crash during Saturday practice, Ben Wilson was forced to withdraw from the MCE British Superbike championship races at Silverstone after suffering from blurred vision.
A visit to the circuit medical centre resulted in him taking a trip to the hospital for a CT scan.
The scans came back clear but he has concussion which will settle down in a few days.
His vision should also return to normal in a few days.
Friday’s free practice had gone well for the Kirton rider, who completed the two sessions in 19th and 18th position.
But the overnight rain had left the track surface wet and slippery and the rain was falling as they went out for the final free practice.
Wilson was going well and holding eighth place when he came across a slower rider and was forced to shut off.
But as he accelerated away he highsided and was thrown from the Gearlink Kawasaki Superbike, hitting his head on the tarmac.
He did take part in the three stage qualifying session but failed to make it through to stage two and ended up in 24th place.
He came out for morning warm up on Sunday but only completed two laps.
Scans confirmed that Wilson was suffering from concussion and had slight bruising behind his eye which was causing the blurred vision.
The final round of the series takes place at Brands Hatch on October 19, when it is hoped that he will be back to full fitness and able to contest the three races at the Kent circuit.