Sinus surgery is performed between the eyes and below the brain, so there is a possibility of complication at these sites. Complications of the eyes include visual disturbances, double vision, and blindness. Complications in the central nervous system may include a leak of the cerebrospinal fluid, the fluid that buffers the brain and spinal cord. The incidence of these complications is very rare. Just the same, an untreated
infection in the sinuses could potentially spread to the eye or the brain, leading to meningitis or an abscess. The potential of these complications occurring is probably higher if you need surgery and do not undergo surgery. However, when these complications do occur, they can be fatal. In fact, the treatment for a brain or eye infection that is not clearing with medicines in the face of sinus disease is emergency sinus surgery, which does not guarantee any of the untoward effects of these complications.
There is a risk of excessive bleeding, which is just the same as with any type of surgical procedure. However, the latest techniques are far less invasive, and bleeding is usually kept to a minimum. If you undergo a septal procedure, there is a risk of a septal perforation (a hole from one side to the other). Most of these heal by themselves, or if not, can usually be corrected with a small graft at a later date. The septum also has a memory and may return to its precorrected position. More important, as with any type of surgery, there is also a risk of failure. If you are diligent about your postoperative care, the risk of failure, scarring, or recurrence is far lower.