Retroorbicularis oculus fat (ROOF) is in reality an extension of the brow fat pad that lies along the superior orbital rim and directly deep to the orbicularis muscle.
后眼轮匝肌脂肪延着上眼眶塉深入眼轮匝肌并且是后眉部脂肪垫的延伸。
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The medial extension should not exceed the inner extent of the medial canthus and the lateral one should not extend beyond the lateral orbital rim.