Its a complication that occurs after a traumatic extraction and what is known as dry socket. See your dental surgeon and ask for topical antibiotics. ...
You have mentioned dry socket, the appropriate treatment for that is use of local antibiotics and systemic analgesics. Kindly get a radiograph done and ask your dentist to irrigate and flush the area before inserting the local medication. ...
I think post surgery, Your dentist must have taken the X-Ray to confirm complete removal of amalgum. Balantitis most likely is coincidental need to consult dermatologist for same. ...
There is no medical treatment of cataract. when ever you get difficulty in vision sufficient enough to hamper your day to day activity go for cataract surgery. ...