Tension and distortion of the upper double eyelid by a non-incision method

초록

The aim of this study is to compare the suture tension and the extent of distortion accord-ing to the continuous and interrupted suture methods. An in vitro eyelid model of 10cm length and 5 layers was made with a 3 layer skin pad for the skin, muscle and aponeurosis, and silicone sheet and sponge for the tarsal plate and conjunctiva. The thickness of the mod-el was 11.8mm. All interrupted sutures were used in Khoo's method, the buried method and Mikamo's method, and a continuous suture was applied in the 2-loops en block method, the subconjunctival buried methed and Maruo's method. the thickness of the eyelid was meas-ured with a custom-made micrometer that had tacks attached on a measuring bar. the ten-sion was measured with a force-gauge. The distortion in the interrupted suture methods was 15±3.4% of the original thickness and it was significantly greater than the 3.3±2.8% of the original thickness in the continuous suture methods (p=0.000, t-test). In the interrupted su-ture metheds, Khoo's method showed the greatest rate of distortion (16.9±4.5%) and this was followed by Mikamo's technique (14.5±2.5%) and the buried suture method (13.6±1.4%). For the continuous suture methods, the 2-loop en bloc method showed the least tension (0.33±0.05N) and this was followed by Maruo's method (0.41±0.07N) and the subconjunctival buried suture method (0.45±0.07N). The tension of the suture at each loop was significantly greater