Asian individuals with “single” upper eyelids are born without a noticeable upper eyelid crease owing to insufficient or absent terminal interdigitations of levator aponeurotic fibers toward the pretarsal orbicularis oculi intermuscular septae, and/or toward the undersurface of the skin that lies along the superior tarsal border.1,2 The associated findings in the single eyelid often include a lower insertional point of fusion of orbital septum with the levator aponeurosis, a relatively...
