Mechanical properties of intra-ocular lenses

Klaus Ehrmann, Eon Kim, Jean-Marie A Parel

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Cataract surgery usually involves the replacement of the natural crystalline lens with a rigid or foldable intra-ocular lens to restore clear vision for the patient. While great efforts have been placed on optimising the shape and optical characteristics of IOLs, little is know about the mechanical properties of these devices and how they interact with the capsular bag once implanted. Mechanical properties measurements were performed on 8 of the most commonly implanted IOLs using a custom build micro tensometer. Measurement data will be presented for the stiffness of the haptic elements, the buckling resistance of foldable IOLs, the dynamic behaviour of the different lens materials and the axial compressibility. The biggest difference between the lens types was found between one-piece and 3-piece lenses with respect to the flexibility of the haptic elements.

Original languageEnglish
Title of host publicationProgress in Biomedical Optics and Imaging - Proceedings of SPIE
Volume6844
DOIs
StatePublished - May 26 2008
EventOphthalmic Technologies XVIII - San Jose, CA, United States
Duration: Jan 19 2008Jan 21 2008

Other

OtherOphthalmic Technologies XVIII
CountryUnited States
CitySan Jose, CA
Period1/19/081/21/08

Fingerprint

Intraocular lenses
Lenses
Mechanical properties
Compressibility
Surgery
Buckling
Stiffness
Crystalline materials

Keywords

  • Capsular bag
  • Haptic pressure
  • Intra-ocular lens
  • Lens foldability

ASJC Scopus subject areas

  • Engineering(all)

Cite this

Ehrmann, K., Kim, E., & Parel, J-M. A. (2008). Mechanical properties of intra-ocular lenses. In Progress in Biomedical Optics and Imaging - Proceedings of SPIE (Vol. 6844). [68440O] https://doi.org/10.1117/12.787107

Mechanical properties of intra-ocular lenses. / Ehrmann, Klaus; Kim, Eon; Parel, Jean-Marie A.

Progress in Biomedical Optics and Imaging - Proceedings of SPIE. Vol. 6844 2008. 68440O.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Ehrmann, K, Kim, E & Parel, J-MA 2008, Mechanical properties of intra-ocular lenses. in Progress in Biomedical Optics and Imaging - Proceedings of SPIE. vol. 6844, 68440O, Ophthalmic Technologies XVIII, San Jose, CA, United States, 1/19/08. https://doi.org/10.1117/12.787107
Ehrmann K, Kim E, Parel J-MA. Mechanical properties of intra-ocular lenses. In Progress in Biomedical Optics and Imaging - Proceedings of SPIE. Vol. 6844. 2008. 68440O https://doi.org/10.1117/12.787107
Ehrmann, Klaus ; Kim, Eon ; Parel, Jean-Marie A. / Mechanical properties of intra-ocular lenses. Progress in Biomedical Optics and Imaging - Proceedings of SPIE. Vol. 6844 2008.
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