Fig. 6. The histologic features of the infraorbital skin showing baggy lower lid. The septal fat compartment protruded anteriorly as the deep fatty layer thickened, and the more-inwardly tugged orbicularis oculi muscle (OOc) compensated for the increased space. In other words, while there was no difference in the length of the orbicularis retaining ligament (ORL, yellow arrowheads), the OOc was tugged considerably more inwards. And, the level of the groove was not the same with the level of ORL but rather equivalent to the level of the orbital rim or the inferior border of the septal fat compartment. Also, the superficial fatty layer as well as the deep fatty layer was thickened. In other words, the laxity of skin ligament was increased.
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