To compare four different secondary IOL fixation techniques regarding the least required force to dislocate a scleral fixated 3-piece IOL in human corneoscleral donor tissue (CST). Experimental Laboratory investigation The least required dislocation force (LRDF) of four different secondary IOL fixation techniques, namely the techniques using transscleral tunnels (TT, as described by Scharioth), glued haptics (GH, Argawa), flanged haptics (FH, Yamane) and bent haptic ends (BH, Behera/Bolz) were investigated using 40 three-piece IOLs (Sensar AR40) fixated to human scleral tissue. The main outcome of the study, dislocation force between different techniques, was measured with a tensiometer. The dislocation force needed to dislocate the haptics was highest with the FH technique and was significantly higher than with all the other techniques (GH vs FH: -1.02±0.02 N, p<0.001; TT vs FH: -1.08±0.21 N, p<0.001; BH vs FH: -1.00±0.25 N, p=0.044). There was no significant difference regarding the dislocation force between the other techniques (GH vs TT (-0.06±0.100 N, p=0.988), GH vs BH (-0.02±0.03 N, p=0.60), TT vs BH (-0.08±0.04 N, p=1.000). The flange haptic technique as described by Yamane proved to be the strongest form of secondary IOL fixation regarding dislocation force in this in vitro study. The other fixation techniques showed significantly less resistance to axial traction.

中文翻译：

---

三片式人工晶状体无缝线巩膜固定技术对脱位力的影响

比较四种不同的二次 IOL 固定技术，以确定在人角巩膜供体组织 (CST) 中使巩膜固定三件式 IOL 脱位所需的最小力。实验 实验室调查 四种不同的二次 IOL 固定技术所需的最小脱位力 (LRDF)，即使用经巩膜隧道的技术 (TT，如 Scharioth 所描述)、胶合触觉技术 (GH、Arkawa)、凸缘触觉技术 (FH、Yamane) 和使用固定在人类巩膜组织上的 40 个三件式 IOL (Sensar AR40) 对弯曲的触觉末端 (BH、Behera/Bolz) 进行了研究。该研究的主要成果，即不同技术之间的错位力，是用张力计测量的。 FH 技术使触觉脱位所需的脱位力最高，并且显着高于所有其他技术（GH 与 FH：-1.02±0.02 N，p<0.001；TT 与 FH：-1.08±0.21 N，p <0.001；BH 与 FH：-1.00±0.25 N，p=0.044）。其他技术之间的脱位力没有显着差异（GH vs TT（-0.06±0.100 N，p=0.988）、GH vs BH（-0.02±0.03 N，p=0.60）、TT vs BH（-0.08） ±0.04 N，p=1.000)。在该体外研究中，Yamane 描述的凸缘触觉技术被证明是关于脱位力的最强的二次 IOL 固定形式，其他固定技术显示出对轴向牵引的阻力明显较小。