What is a tear trough?
The tear trough, also known as a nasojugal groove, extends from the inner corner of the eye, following a semicircular arc and transitioning to the palpebromalar groove. A deep tear trough can create a shadow that is perceived as a dark circle below the eye. It also creates a division between the lower eyelid and cheek that is an early sign of aging around the eyes. Patients with deep tear troughs often complain that they look more tired and older than they really are.