Age 21, how to improve puffy, 'detached' under-eye structure? (Photos)

I agree that from the photos, it looks like you have left eyelid ptosis or droop causing an eye that is not as widely open and a high fold in the lid. This can be treated surgically by a couple of different methods with improvement but a perfectly symmetrical result is difficult. You should have...

This is not something that is traditionally desired in Western cultures, but, it is not hard to create. Filler injections should be able to do that for you if placed by an expert. Or, fat grafting or even fat repositioning may be able to get those results. Should be an office procedure.

They eyelid and cheek skin attach to the skin through a variety of different attachment ligaments and septa. The face has multiple fat compartments that help shape the face and these are divided by septal layers. As the face ages many people will get deflation in the upper cheek compartments and...

Plastic surgery scars require attention after surgery so that they remain cosmetically-appealing and barely noticeable. In our office, we use a protocol for scars that minimizes their activity in the 6-8 weeks after surgery. If you have late plastic surgery scars, you may also require laser and...

Yes it can partially improve that but it is important to do lower blepharoplasty with eye fat bags repositioning and not removal. See an expert.

From your photo it appears you are a good candidate for filler to the lower eyelid. This will help replace volume and give a smoother transition between the lower lid and cheek junction. See an expert injector near you for treatment.