This is a question I have been asked many times, and seems to be a common concern in the general population. This concern stems from just a couple of cases that have been reported in the medical literature about blindness occurring after injection of filler around the eyes. This is something I have never seen in my own practice. Why could this have happened? Well, there are theories concerning the filler accidentally being injected right into a major vein that also connects to the eyeball. I do know that injection technique is extremely important especially around the eye. Sometimes I have been shocked by witnessing extremely poor injection technique by some physicians and nurses. Fillers are tools for technicians to use. Poor technique is truly the reason for the majority of complications. Some complications like bruising and swelling are sometimes inevitable and luck based. Lumps should rarely occur if injected well. Again, I have injected thousands of eyes and have yet to ever witness a major issue like blindness. Is it possible? Sure. But I would put the probability at an extremely low level in an experienced injector's hands.