Sobti Manvi, Joshi Naresh
Ophthalmology department, Chelsea and Westminster Hospital, London, United Kingdom.
Cromwell Hospital, London, United Kingdom.
Facial Plast Surg. 2023 Feb;39(1):28-46. doi: 10.1055/s-0043-1761912. Epub 2023 Jan 27.
Lid retraction is a feared complication of lower blepharoplasty. Anatomical variations like negative orbital vector, horizontal lid laxity, and preexisting lid retraction are more prone to lid malpositions. Meticulous and precise execution of a series of surgical steps is key to preventing complications. This includes minimizing surgical trauma, meticulous hemostasis, preserving innervation to the medial lid and pretarsal orbicularis, safe method of fat excision, septal tightening while maintaining lid traction, and conservative and titrated skin excision. Canthal fixation addresses lid laxity and maintains the lid stretched vertically while postoperative healing and fibrosis are taking place. Post-blepharoplasty lid retraction may occur due to failure to address lid laxity and the occurrence of middle lamellar fibrosis. Excessive skin excision may also result in anterior lamellar deficiency. The "sag and drag" concept is useful to evaluate the post-blepharoplasty retracted lid. The treatment of the retracted lid includes lid massage, replacing the anterior lamella, or releasing the middle lamellar fibrosis or a combination of techniques. In conclusion, understanding the mechanisms of lid retraction, careful preoperative assessment, and surgical precision will help surgeons to prevent and manage this complication.
上睑退缩是下睑成形术令人担忧的并发症。诸如眶向量为负、水平睑松弛和既往存在的睑退缩等解剖变异更容易导致睑位置异常。精心且精确地执行一系列手术步骤是预防并发症的关键。这包括将手术创伤降至最低、细致止血、保留睑内侧和睑板前眼轮匝肌的神经支配、安全的脂肪切除方法、在保持睑牵引的同时收紧眶隔以及保守且适度的皮肤切除。眦固定可解决睑松弛问题,并在术后愈合和纤维化发生时保持睑垂直伸展。睑成形术后的睑退缩可能是由于未解决睑松弛问题以及中层纤维化的发生。过度的皮肤切除也可能导致前层不足。“下垂与牵拉”概念有助于评估睑成形术后退缩的眼睑。退缩眼睑的治疗包括眼睑按摩、替换前层、或松解中层纤维化或联合应用多种技术。总之,了解睑退缩的机制、仔细的术前评估以及手术精确性将有助于外科医生预防和处理这一并发症。