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Case ReportOpen Access

Micromechanical Properties of Individual Intraocular Lenses (IOL) Volume 3 - Issue 2

Felix Klein, Erika Koch and Norbert Hampp*

  • University of Marburg, Department of Chemistry, Germany

Received:March 22, 2021;   Published:April 9, 2021

Corresponding author: Norbert Hampp, University of Marburg, Department of Chemistry, Hans-Meerwein-Str. 4, 35032 Marburg, Germany

DOI: 10.32474/TOOAJ.2021.03.000160

 

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Abstract

Mechanical properties can now be analyzed on single intraocular lenses (IOLs) after all machining steps ready for implantation employing micromechanical analytics. This is important because IOLs are implanted through a so-called shooter. Folding into the loader chamber and squeezing the IOL through the about 1 mm wide nozzle into the eye’s capsular bag means a lot of mechanical stress to the polymer. We compare hydrophilic and hydrophobic materials in terms of unfolding speed and time to complete unfolding and found significant differences. Hydrophilic materials seem to be better suited for implantation than hydrophobic ones. A 2D mapping of IOL shows that the mechanical properties are pretty constant over the optics’ full area. This is somewhat astonishing because the thicker middle part and the thinner outer rim part experienced quite different mechanical treatment. Micromechanical analytics are a great advance over the prior testing on larger material pieces which did not go through the lathing process.

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