You'll learn what causes blindness and when. The most serious complications are vascular. Vascular occlusions can cause necrosis (tissue death), scarring and, even more seriously, blindness. In fact, dermal fillers have already resulted in 98 reported cases of blindness (Beleznay et al, 201.Eventual embolization in the central retinal artery will deprive the retina of oxygen and cause blindness.
Although a rapid intraocular injection of hyaluronidase has been successful in dissolving the filler and preventing permanent blindness, there is no agreed method for reversing central retinal artery occlusion from fillers. Some advanced courses will cover occlusion of the central retinal artery and recommend using the latest medical knowledge. There are many small blood vessels, specifically arteries, in the forehead and eye area that supply blood to the area. Improper use of dermal fillers and fat injections can cause blockage of a blood vessel that supplies blood to the eye.
This condition is known as retinal artery occlusion (RAO). Internationally, 98 cases of blindness caused by fillers have been documented.