hello and welcome to HCM,
There are twe possibilities,
1. If the drum got ruptured during syringing, then you need to be very careful in that no water should enter the ear. You need also to take an audiometry
examination and confirm the loss of hearing. Take a course of antibiotics and antihistamine and do not put any drops. If you manage to keep your ears dry and non infected then you have more than 90% chance of the ear to heal in a time period which range from two weeks to two months after which your hearing will improve.
2. If there already was a hole due to the tube inserted one year back then also you need to take an audiometry examination and confirm the loss of hearing. Take a course of antibiotics and antihistamine and do not put any drops. However in this case the hole may not heal and you may have to do a surgery for permanent cure of hearing loss
In either case do not allow water to enter ear, avoid frequent head bath and wait for a period of at least three months before deciding on the permanent treatment
take care and get well soon
Dr Sriram Nathan