title: Lens implantation: lessons learned from the first million. The Third Rayner Lecture, 1982.
abstract: Experience gained from over one million intraocular lens implants has emphasized the importance of quality control, correct design and knowledgeable use of materials. Biodegradation of nylon is well known; polypropylene also degrades, but much more slowly; polymethylmethacrylate does not show evidence of biodegradation even, in one specimen for which I have a control, after 23 years.
mesh_terms: D001673:Biodegradation, Environmental; D006801:Humans; D007910:Lenses, Intraocular; D008768:Methylmethacrylates; D008855:Microscopy, Electron, Scanning; D009757:Nylons; D011126:Polypropylenes; D013242:Sterilization; D013537:Sutures
chemical_list: D008768:Methylmethacrylates; D009757:Nylons; D011126:Polypropylenes