Ophthalmic plastic and reconstructive surgery
-
Ophthal Plast Reconstr Surg · Jan 2019
The Relationship Between Eyebrow and Eyelid Position in Patients With Ptosis, Dermatochalasis and Controls.
The purpose of this study is to explore mechanical and co-innervational factors involved in both voluntary and involuntary brow elevation among people affected by ptosis and dermatochalasis. ⋯ In eyelids with ptosis, mechanical brow elevation does not change eyelid position; however, voluntary brow elevation raises eyelid position to a similar position as maximal eyelid opening. These results argue against the contention that the brow is elevated to mechanically lift the eyelid in ptosis and instead suggest that the brow elevation is driven by efforts to raise the eyelid, possibly via co-innervation.