The Micropure Goretex Scleral Fixated Intraocular Lens (SFIOL) represents a sophisticated solution for visual rehabilitation in eyes lacking adequate capsular support in cases where in-the-bag lens placement is not possible via conventional Phacoemulsification technique. This technique utilizes a foldable, glistening-free acrylic lens—specifically the Micropure lens—combined with high-strength CV-8 Gore-Tex (expanded polytetrafluoroethylene) sutures to achieve stable, long-term centration within the posterior chamber.
Design and Optical Properties
The Micropure lens is an aspheric, monofocal IOL crafted from a hydrophobic acrylic material. Its unique "glistening-free" composition ensures long-term optical clarity, reducing the risk of postoperative opacification. The lens features a four-point haptic fixation design, which provides a broad base for stability and helps distribute the tension of the Gore-Tex sutures evenly, preventing lens tilt or decentration.
The Gore-Tex Advantage
Traditional SFIOL techniques often relied on 10-0 Prolene sutures, which were prone to degradation and late-stage breakage over 5–10 years. The adoption of Gore-Tex sutures has revolutionized the procedure due to:
- Extreme Durability: Gore-Tex is a non-absorbable, multi-stranded material that does not degrade over time.
- Biocompatibility: It exhibits minimal inflammatory response within the scleral tissue.
- High Tensile Strength: It allows for secure knotting and tension adjustment without the risk of snap-breakage during or after surgery.
Surgical Technique and Clinical Benefits
The procedure typically involves a "four-flanged" or "four-point" fixation through small sclerotomies, usually placed 2 mm to 2.5 mm from the limbus. The sutures are looped through the eyelets of the Micropure haptics and externalized.
Benefit
Description
Small Incision
The foldable nature of the Micropure lens allows for insertion through a 2.8 mm to 3.2 mm incision, inducing less astigmatism.
Stability
The four-point fixation prevents the "see-saw" motion often seen in two-point fixation models.
Versatility
Ideal for complex cases such as Marfan syndrome, trauma, or failed IOL-capsular complex segments.
Conclusion
The Micropure Gore-Tex SFIOL technique offers a robust, permanent alternative for surgeons managing aphakia. By combining the optical excellence of a modern hydrophobic lens with the permanent structural integrity of Gore-Tex, it minimizes common complications like UGH (Uveitis-Glaucoma-Hyphema) syndrome and late IOL dislocation, providing patients with reliable, high-quality vision with minimal astigmatism and excellent unaided vision.
