Nasojugal crease, tear trough deformity, nasojugal groove, bags under eyes, under eye hollowness

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In the young individual the transition between lower eyelid and cheek is imperceptible. The dividing line between these areas in older individuals is the nasojugal crease also called the nasojugal groove (term first used in 1961) or tear trough (term first used in 1969). It is an early sign of aging around the eyes, lending a fatigued and aged appearance to the face. As part of the aging process ligaments that fix facial skin to the underlying facial bones thin and lengthen or stretch, facial bones recede back and facial fat shrinks. This results in the drooping of facial skin and appearance of laugh lines, jowls, nasojugal creases, eyelid bags etc.. The skin within the nasojugal groove or crease becomes thinner and/or darker in color than the slightly lower nose or cheek skin. It can also seem deeper or be more visible if there is protrusion of fat into the lower eyelid. The aging process starts near the nose as the tear trough and progresses outwardly towards the same side ear becoming what is called the palpebromalar groove.


Tear Trough and Palpebromalar Groove Boundaries



Examples of Tear Troughs in Younger Patients Without Protruding Eyelid Fat

Injectable Fillers - Collagen, Restylane et al

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The first injectable filler available in the United States was Zyderm I. It was approved by the FDA in 1981 for injection into skin folds and wrinkles related to the aging process or depressed skin scars. Zyderm II followed in 1983 and Zyplast in 1985. They were all basically collagen derived from cow hide. Each form was designed for injection at a different depth within the skin. The chemical composition of each differed slightly so they lasted for a variable number of months, usually 2 to 3 months. Aside from their temporary effect the other major drawback to their use was the need for skin testing. A small amount was injected under the skin and if the patient did not react to the material they could go ahead with a full treatment some weeks after the skin test. If the full treatment was given to someone who was sensitive/allergic severe allergic reactions could result including the loss of the skin over the injection site.