Commentary on: Empowering insights on IOL refixation techniques

A “flange” refers to an object or attachment designed to provide additional strength and proper alignment for various components. When repositioning and refixing a dislodged intraocular lens (IOL), merely repositioning the IOL is not sufficient; it is equally essential to fixate the lens with adequate strength. This ensures that the lens remains stable over time and is not prone to further dislodgment, safeguarding the patient’s long-term visual outcomes withstanding the test of time. The authors have remarkably described a new technique of fixating dislodged IOLs. Multifocal IOLs are the way of the future, and its success depends on various factors considering its limitations. One such limitation is the perfect centration of the IOL to achieve optimal results, which might otherwise lead to more harm than good. These techniques require not only good forethought in planning out the procedure but also good dexterity along skill as well. Considering the method here, we need to vertically align their optic; we need to be very mindful of the adjacent ocular structures, the most important being the corneal endothelium.[1] Importance of Material Selection for IOL Fixation This study also highlights the importance of understanding the material used as a flange, considering its breakability, longevity, and strength for safe outcomes, thus stating that 7-0 polypropylene is a highly suitable material for the intended purposes. To enhance the effectiveness of these secondary interventions, it is important to establish a more permanent solution. This approach can minimize additional surgical trauma to the ocular tissues and reduce the likelihood of needing tertiary procedures in the future. The potential complications associated with optic cracks underscore the need for careful handling during IOL implantation.[2,3] IOL tilt is another important factor to address as this will vastly impact the visual outcome of the patient. A safe distance for piercing the IOL optic needs to be carefully thought out and equidistant from the edge during each puncture. The authors have conducted a commendable study analyzing the effect of piercing the optic. However, would the results be consistent across different types of IOLs—refractive versus diffractive—and varying sizes of optical zones? This concept needs to be studied more in detail. Refixation Techniques The flanged techniques for multifocal IOL fixation represent a significant evolution in addressing cases of dislocated or mispositioned lenses, particularly in eyes with compromised capsular support. The Yamane technique, a pioneering approach, employs scleral fixation of a three-piece IOL by externalizing the haptics through 30-gauge thin-walled needles. The haptic ends are cauterized to form flanges, which are securely tucked into scleral tunnels. This minimally invasive procedure ensures exceptional stability, making it a reliable choice for multifocal IOL fixation. Building on this foundation, the modified Yamane technique refines the original method by incorporating longer scleral tunnels and optimizing haptic positioning to reduce tilt.[4] Similarly, other innovative approaches like the use of T-haptic scleral fixated IOLs provide sutureless and glueless solutions, ensuring robust fixation and reducing the risk of complications.[5] Advanced imaging technologies, such as intraoperative OCT, digital marking systems such as Callisto or Verion, used for alignment in astigmatism correction and multifocal IOL centration, wavefront aberrometry, and integrated surgical microscope guidance, play a crucial role in achieving precise alignment and centration of multifocal intraocular lenses, ensuring optimal visual outcomes. The Canabrava double-flanged technique offers an innovative alternative by creating two flanges on each haptic to enhance anchoring within scleral grooves. This eliminates the need for adhesives or sutures, simplifying the process while ensuring robust lens stability.[6] Similarly, the four-point flanged fixation technique introduces multiple flanges to stabilize the IOL at four distinct points, uniformly distributing forces across the lens. This approach minimizes tilt and decentration, making it especially effective for larger or multifocal IOLs requiring precise alignment. Another noteworthy technique is the Scharioth method, which, although primarily designed for optical enhancement, employs flanged or sutured scleral fixation of add-on multifocal IOLs.[7] This method is particularly useful in pseudophakic patients needing enhanced multifocality. In contrast, the glued IOL technique, pioneered by Dr. Amar Agarwal, uses fibrin glue to secure the IOL haptics within scleral pockets.[8] Although more time-intensive, it provides exceptional stability and alignment, particularly in cases of severe capsular deficiency. For anatomically challenging cases, modified anterior flanged techniques adapt the haptics to scleral fixation, offering a customized approach that improves alignment and minimizes tilt for multifocal lenses. Collectively, these advanced flanged methods have revolutionized the management of IOL malposition or dislocation, offering diverse, minimally invasive options tailored to individual patient anatomy and visual demands. Each technique brings unique strengths, allowing surgeons to achieve optimal outcomes in multifocal IOL fixation with reduced complications and enhanced visual performance.