The aesthetic analysis of midface ratio after folding aponeurosis of levator palpebrae superioris muscle in the ptosis correction / 实用医学杂志

ABSTRACT

Objective To measure the ratio of the length between upper edge of eyebrow and edge of lower eyelid(L1)/the length between edge of lower eyelid and nasal base(L2)in the fordless-eyelid and upper lid ptosis patients who received levator aponeurosis folding surgery. To analyze the change in the proportion of midfa-cial aesthetics. Methods From December 2015 to October 2016,a total of 21 patients were recruited as study group. Those patientswere diagnosed with foldless eyelid and upper lid ptosis. They received levator aponeurosis folding procedures were carried out in our departmentand the pre- and post-operative photographs were collected. Full-face pictures of 20 Chinese female movie stars were prepared as control group. The ratiosof L1/L2(J)were measured via Adobe Photoshop CS6. The statistical significance was analyzed and the change of midfacial propor-tion was evaluated. Results In study group,the mean value of pre- and post-operative L1/L2(J1)is 0.746 and (J2)0.657 postoperatively. In control group,the mean value of L1/L2(J3)is 0.667. Statistical differences showed between the pre- and post-operative samples and between pre-operative samples and control group. There was no statistical difference between post-operative and control group samples. The ratios between L1 and L2 in post-opera-tive samples are close to those in control group ,which are closer to the golden radio. Conclusions Levator aponeurosis folding can effectively lower eyebrow in patients with upper lid ptosis and shorten the length between eyebrow and lower eyelid. Therefore harvesting a more appropriate and harmonious ratio of L1/L2 according the golden section theory. The changes in the proportion of midfacial aesthetics after operation could be used as a key point in the pre-operative communication and post-operative effect evaluation ,besides the size of palpebral fissure and corneal exposure rate.