What this site is for
This is a patient decision guide to filler treatment of the tear trough, published by Chongqing West District Hospital, a tertiary general hospital in Jiulongpo District, Chongqing. It narrows the filler pages of this cluster rather than repeating them: what filler is, whether to have it and how the substance classes differ are answered there. What this site adds is the part that is specific to the lower lid — telling a hollow from a herniated fat pad, judging how little material thin skin will tolerate, and knowing in advance how a result can be taken back.
The distinction the site is built on
A hollow under the eye and a herniated fat pad cast a similar shadow and are treated in opposite directions. Material placed into a hollow fills a concavity and softens the shadow it casts. Material placed beneath a mound raises the surface around it and makes the eye read heavier. Filling a bulge makes it worse, and because that happens gradually across visits it is usually the patient who notices last. Everything here turns on that distinction, which is why the assessment is described before the treatment in almost every guide.
What it deliberately does not do
It does not name products or brands, quote prices or dosages, or promise a result. It does not present the treatment as a way to remove a bag, lighten dark skin or thicken a thin lid. It does not describe the substance classes, because that is the parent site’s work rather than this one’s, and it does not present lower eyelid surgery as a failure of the injection, because where an operation is the honest answer that is what the assessment will say.
How the content is reviewed and corrected
Ke He, MD, Deputy Director and Head of Skin & Laser Aesthetics, is the responsible physician. Every guide is reviewed against her clinical judgement before publication and reviewed again on a twelve-month cycle. If you find something unclear, out of date or wrong, the contact page explains how to tell us, and corrections are made to the page itself.