Late postoperative opacification of MemoryLens hydrophilic acrylic intraocular lenses Case series and review☆☆☆★★★
Accepted 23 April 2003.
Refers to erratum:
erratum
Journal of Cataract & Refractive Surgery
July 2004 (Vol. 30, Issue 7, Page 1391) Full Text |
Full-Text PDF (20 KB)
Abstract
Purpose: To report clinical and spectrographic analyses of 2 explanted hydrophilic acrylic intraocular lenses (IOLs).
Setting: John A. Moran Eye Center, Salt Lake City, Utah, USA, and Johannes Gutenberg-University, Department of Ophthalmology, Mainz, Germany.
Methods: We report 6 cases of opacification of MemoryLens® IOLs (Ciba Vision) that occurred approximately 2 years after implantation. The anterior and posterior surfaces of the IOLs had a white, frosted appearance, and the IOLs' interior looked brown, similar to the appearance of a brunescent cataract. Two of the IOLs were explanted because of a significant decrease in visual acuity. The IOLs were sent for further clinicopathologic analysis including scanning electron microscopy and energy dispersive x-ray spectroscopy (EDX).
Results: Microscopic analysis revealed multiple, fine, granular deposits of various sizes on the surface of the lens optics. The EDX analysis showed the presence of calcium within the deposits.
Conclusions: Our cases show that hydrophilic acrylic IOLs can opacify even years after implantation. Analysis of the explanted IOLs revealed calcification.
aDepartment of Ophthalmology, Johannes Gutenberg-University, Mainz, Germany
bJohn A. Moran Eye Center, University of Utah Health Sciences Center, Garden City, KS, USA
cSalt Lake City, Utah, and Fry Eye Associates, Garden City, KS, USA
Reprint requests to Mana Tehrani, MD, Johannes Gutenberg-University, Department of Ophthalmology, Langenbeckstrasse 1, 55131 Mainz, Germany.
☆ Presented at the XXth Congress of the European Society of Cataract & Refractive Surgeons, Nice, France, September 2002.
☆☆ Supported in part by a grant from Research to Prevent Blindness, New York, New York, to the Department of Ophthalmology and Visual Sciences, University of the Utah.
★ None of the authors has a financial or proprietary interest in any material or method mentioned.
★★ Drs. David Castner and Dan Graham, senior fellow, Department of Bioengineering, University of Washington, Seattle, Washington, USA, analyzed the IOLs' composition.
ABSTRACT