Theoretically, if they go through the orbital wall (a rare complication of sinus surgery) and then you dive before healing is complete with scar tissue you could get periorbital emphysema (gas around the eye in the soft tissue). That actually sometimes happens to people who haven't had surgery who don't equalize their mask correctly.
My son has a polyp in his frontal sinus that causes him pain when he dives. I suggested that he get it removed, but he gave up diving instead...! Oh, well... I guess he wasn't that into it.
My son has a polyp in his frontal sinus that causes him pain when he dives. I suggested that he get it removed, but he gave up diving instead...! Oh, well... I guess he wasn't that into it.