In simple terms, a blepharoplasty is removal of excess skin on the upper or the lower lid, as well as redistribution of the fatty pockets. For such a little piece of our face and relatively little piece of our body, there’s an awful lot of anatomy packed into those eyelids.
If you start from the outside on the upper lid there’s skin and then oftentimes there’s a little tiny bit of fat, especially on the inner part of the eye right under the skin. Then you have your orbicularis muscle which is an oval, circular muscle that goes around the eyelids – upper and lower, one big muscle – and it helps you to close your eyelids.
Beneath that is a little thin membrane called the septum. And beneath the septum are little fatty pads. On the upper eyelids, there are two well developed fatty pads and on the lower there are three.
Below that would be the bone, and then below the fat and the bone are the muscles that make your eyeballs move. And then if you keep going way, way deep, you get into the blood vessels that go to the back of the eyeball. I’m just going to say “eyeball” rather than “globe” because that’s just sort of what comes out of my mouth most of the time.
So on the upper lid, what happens with time and our good old friend gravity is the lid skin begins to stretch. Now, if you’re somebody who pulls on your eyelids or rubs them all the time you can actually accelerate that process. Then there’s lots of people that just have a lot of extra upper eyelid skin and it seems to be a familial trait or one that’s from the family, and that is without question true.
The Inescapable Pull of Gravity and How it Affects Our Eyelids
However, where gravity comes into play is what happens with your eyebrows. As we age, gravity will begin to pull the eyebrows down. Because, you see, there’s only one muscle that keeps your eyebrows up. That’s the frontalis muscle, and that’s a horizontal muscle that goes from the rim above your eyes – that little bony rim where your eyeballs protrude out of – up into the top of the scalp.
Because there’s only one muscle that pulls your eyebrows up, it has to be pretty strong. So if you look at yourself and you have a lot of horizontal wrinkle lines in your forehead, it just means that your frontalis muscle is working really hard to keep your eyebrows up.
Gravity of course is going to pull this down because the weight of the brow which is just skin and hair and fatty tissue, and then the orbicularis underneath of it, is affected by gravity. The frontalis muscle and of course the bone of your skull probably isn’t, although there’s a lot of controversy in plastic surgery whether bones do elongate with aging and gravity. We certainly know that they can remodel but I don’t think they actually get longer myself.
So what happens to make the brow come down a little bit, and I am going a little bit into my brow podcast but we’ll go over that again in more depth, is because the muscle around your eye that closes your eyelids is going to pull down on your brows. And then those three little muscles in the center part, your corrugators and your glabellar muscle – the “Elevens”, what we use Botox in – also are brow depressors.
So you’ve got one muscle, the frontalis to pull your forehead up, and you’ve got four muscles to pull it down, plus good old gravity.
So for most people who get out into their 40s, 50s, and 60s, you begin to see redundant skin on the upper eyelids. This is called dermatocalasis or loss of elasticity of the skin. Sometimes it’s blepharochalasis although that really means that the whole eyelid has gotten loose.