A non-uniform operation
As with many operations in different specialties, cosmetic eye surgery is a non-uniform and imperfect set of procedures that usually help but can sometimes harm.
Often presented as a straight-forward and simple cosmetic operation carrying a near-guarantee of success, "blepharoplasty" is, in reality, merely the name for a family of diverse surgical procedures intended to enhance eyelid appearance.
What this means is that one so-called "blepharoplasty" is seldom the same as the next. Depending on variables such as age, starting point, anatomic limitations, tissue health, and so on, the actual customized mix of procedures that goes into making up each given operation will vary patient to patient.
While the most common procedures typically work well, some designed to address more difficult eyelid, brow, and upper cheek conditions are far from perfect. Others are new and relatively unproven. A few are old and known to be risky