Rarely do they need revisionary surgery. Some problems are minor and rare. There may be temporary numbness in the area. Major problems such as bleeding, infection, and injury to the eye have been reported. They are rare but they do occur.
Some individuals have so much skin that their vision is blocked.
Photos of your condition as well as a consultation from an opthalmologist or optometrist will be needed to document your problem. Insurance companies look very closely at these requests for insurance coverage. Unless the condition is very clear they are very difficult to obtain. Check the position of your eyebows. Brow lifts elevate sagging of the eyebrows.