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Impressum
Explantation of an opacified hydrophilic acrylic intraocular lens
Pavlovic S., Weinand F.
Zentrum für Augenheilkunde, Friedrichstr. 18, 35392 Gießen
Intraocular lens (IOL) optic opacities have been observed in foldable
acrylic IOLs. In some patients it can cause glare, reduced visual acuity
and contrast sensitivity. In this video we present an electron microscopic
study of opacities in an explanted hydrophilic acrylic IOL. A 67-year-old
patient was referred to our department in December1998 because of progressive
visual loss in her left, pseudophakic eye. The cataract operation was
performed in January 1998. A one-piece hydrophilic acrylic IOL was implanted.
The IOL-optic was opaque due to many tiny whitish opacities. The IOL was
explanted, and exchanged for an PMMA IOL. The IOL was analyzed with a
Philips PSEM 500 scanning electron microscope, a Zeiss EM902 transmission
electron microscope and a Hitachi H600 transmission electron microscope
equipped with a Kevex 7000 energy-dispersive x-ray microanalysis system.
The opacities consisted of inorganic crystals containing calcium, phosphorus
and oxygen - presumably calcium phosphate.