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It is now known that the dominant factor in facial aging is a gradual loss of fat. Such change may begin during the early thirties and progress at a variable rate based primarily upon inhertied tendencies.
Unfortunately, fat loss in the eyelid and surrounding structures (collectively known as the "periorbita") is more noticeable at earlier ages in many Asian patients. In some patients, relative fat shortage is already present by the late twenties.
As fat loss increases, the overlying skin begins to deflate. A growing concavity or depression appears midway between the brow and eyelid and then gradually deepens.
Since, as a rule, young Asian lids are full while older lids are noticeably more hollowed, the net effect of this fat loss is to make the face appear prematurely old.
By age forty (although sometimes by as early as the twenties), a sinking eyelid can generate real cosmetic concerns that cannot be addressed by either double eyelid surgery or traditional blepharoplasty since neither operation restores fat.
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