Liu D, Stasior O G
Plast Reconstr Surg. 1984 Jan;73(1):137-9. doi: 10.1097/00006534-198401000-00034.
An instrument is designed to measure the distractibility or horizontal laxity of the lower eyelid. It gives precise measurement of laxity independent of the examiner. It enables the surgeon to determine when and how much tightening of the lower eyelid is necessary to achieve the desired result in repair of entropion or ectropion and in cosmetic blepharoplasty.