The Met Police have launched an investigation following an acid attack in South London.
Emergency services were called just before 7am on Thursday morning after the driver of the route 109 bus raised the alarm.
Fire crews Police and Paramedics rushed to the scene that was yards from Croydon Hospital. The incident is being treated as a Hazmat Level two incident.
A source for the fire service confirmed that acid has been used in the foul attack.
A number of fire appliances, specialist vehicles and officers were sent to Boots the optician on London Road in Thornton Heath to help treat the person involved.
A spokesman for the Met Police Said : Officers were called at around 6.45am on Thursday, 30 April to reports of a man injured on a bus travelling on London Road, South Norwood.
It was reported that the victim was approached by another man who sprayed an unknown substance in his face before stealing his bag and getting off the bus.
Officers attended alongside the London Ambulance Service and the London Fire Brigade.
The victim was taken to hospital; his injuries have been assessed as non life changing.
Enquiries continue; no arrests have been made.
Any witnesses to the incident or anyone with information should contact police on 101 with CAD reference 1011/30APR.