Hii..

As you ask about operation theatre diploma in Bihar  .. operation theatre assistant diploma is 2 year full time course which you can do from Nalanda Medical College and Hospital Patna Bihar.. there are 10 seat for operation theatre assistant diploma ...

For more information go through this link..

https://www.careers360.com/colleges/nalanda-medical-college-and-hospital-patna/diploma-in-operation-theater-assistant-course

All the best!!