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Light-induced endocapsular polymerization of injectable lens refilling materials
H J Hettlich1, K Lucke, C F Kreiner
1Klinik für Augenheilkunde, Medizinische Universität zu Lübeck, Federal Republic of Germany.
German Journal of Ophthalmology
|January 1, 1992
Summary
Researchers developed a novel lens refilling technique using a liquid monomer polymerized by cold light within the capsular bag. This method shows promise for cataract surgery, avoiding anterior chamber reflux and inflammation.
Area of Science:
- Ophthalmology
- Biomaterials Science
- Regenerative Medicine
Background:
- Advanced phacoemulsification preserves the capsular bag, creating opportunities for lens refilling techniques.
- Current research focuses on developing safe and effective methods for intraocular lens refilling.
Purpose of the Study:
- To develop and evaluate a novel method for injecting and polymerizing a liquid monomer within the lens capsule.
- To assess the biocompatibility and safety of the refilling material and technique.
Main Methods:
- Injection of a liquid monomer into the preserved capsular bag.
- In-situ polymerization of the monomer using cold light (400-500 nm).
- Cell-culture studies to select a non-cytotoxic, non-leaching material.
- In vivo studies in rabbits to evaluate inflammatory response and morphological changes.
Main Results:
- An optically clear, non-cytotoxic material was selected, which does not release harmful substances.
- Polymerization within the capsule effectively prevented monomer reflux into the anterior chamber.
- Initial rabbit experiments showed no significant postoperative inflammation or adverse morphological changes in ocular tissues.
Conclusions:
- The developed lens refilling technique is a promising approach for addressing lens opacification.
- The method demonstrates safety and efficacy in preliminary animal studies, with potential for clinical application.