Routine posterior capsule intraocular lenses depend on the capsule and zonules to maintain position and rotation. When the posterior capsule is compromised, a sulcus lens may be placed between the iris and anterior capsule. However, there are times when zonular support is compromised or when the entire capsule is absent. In these cases, the IOL must be fixed to the iris or to the sclera itself. There are methods for tying sutures to a variety of haptic configurations for single-piece IOL which will not be discussed in this chapter. There are suture-less fixation techniques such as the Yamane for scleral fixation and claw lens for iris fixation, which are more advanced techniques not covered in this chapter (Clinical Outcomes and Lens Constant Optimization of the Zeiss CT Lucia 602 Lens Using a Modified Yamane Technique – PMC. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7680091/ . Accessed 27 Sept 2024).