Variation in intraocular lens calcification under different environmental conditions in eyes with supplementary sulcus-supported lenses

American Journal of Ophthalmology Case Reports

Ingo Lieberwirth¹  Ramin Khoramnia²  Gerd U. Auffarth²  Patrick R. Merz²  Donald J. Munro²  Timur M. Yildirim²  Sonja K. Schickhardt²  Hyeck-Soo Son² 

[1] Deparment of Physical Chemistry of Polymers, Max Planck Institute for Polymer Research, Mainz, Germany;The David J. Apple International Laboratory for Ocular Pathology, Department of Ophthalmology, University Hospital of Heidelberg, Heidelberg, Germany;

关键词: Intraocular lens explantation;    Supplementary intraocular lens;    Addon intraocular lens;    Intraocular lens pathology;    Hydroxyapatite;    Biomaterial;   

DOI  :  

来源: DOAJ

【 摘 要 】

Purpose: Analysis of explanted intraocular lenses (IOLs) from pseudophakic eyes with supplementary sulcus-supported IOLs. Methods: In this laboratory investigation, ten supplementary and capsular bag IOLs were analyzed. All lenses were received between January 2012 and March 2018. Explants were examined morphologically with histological and electron microscopic techniques and patients’ medical history was evaluated. Additionally, we used a technique new to this field: Transmission Electron Microscopy and electron diffraction pattern analysis was performed to investigate the structure of the opacifying crystals in detail. Results: Eleven lenses were explanted due to IOL opacification from seven polypseudophakic eyes: In three cases the supplementary lens calcified, in three cases the capsular bag IOL (both lenses analyzed) and in one case both IOLs (only the supplementary was received). Additional surgical procedures and comorbidities included pars plana vitrectomy or Descemet stripping endothelial keratoplasty and diabetes mellitus. For each opacified lens, a varying layer of a Calcium phosphate beneath the optic surface was apparent. Crystal characterization revealed its composition to be Hydroxyapatite. Conclusions and Importance: We report on a series of secondary calcification in lenses explanted from polypseudophakic eyes. In some cases, calcification occurred in the capsular bag lens, in other cases in the supplementary lens, or in both. The severity of the morphological change could be related to the comorbidities and the presence of surgery subsequent to the lens implantations. Detailed morphology of the opacifying crystals was revealed.

【 授权许可】

Unknown