Opacification of a silicone intraocular lens caused by calcium deposits on the optic.
We describe opacification of a plate-haptic silicone intraocular lens (IOL) caused by calcification in a diabetic patient with asteroid hyalosis. The IOL was explanted 48 months after uneventful phacoemulsification because opacification of the posterior surface was causing significant visual disturbance. Light and scanning electron microscopy and x-ray spectrometry of the explanted IOL showed the opacification consisted mainly of calcium and phosphate, presumably hydroxyapatite, in the form of precipitations on the posterior surface of the optic.
Wackernagel
Werner
W
Department of Ophthalmology, Karl-Franzens University Graz, Graz, Austria.
Ettinger
Karl
K
Weitgasser
Ursula
U
Bakir
Berin Gŭl
BG
Schmut
Otto
O
Goessler
Walter
W
Faschinger
Christoph
C
D000368:Aged; D001672:Biocompatible Materials / Q000009:adverse effects; D002114:Calcinosis / Q000209:etiology* / Q000473:pathology; D002118:Calcium / Q000032:analysis; D020878:Device Removal; D017886:Durapatite / Q000032:analysis; D004577:Electron Probe Microanalysis; D005260:Female; D006801:Humans; D007910:Lenses, Intraocular / Q000009:adverse effects*; D008855:Microscopy, Electron, Scanning; D010710:Phosphates / Q000032:analysis; D011475:Prosthesis Failure; D012826:Silicone Elastomers / Q000009:adverse effects*
D001672:Biocompatible Materials; D010710:Phosphates; D012826:Silicone Elastomers; D017886:Durapatite; D002118:Calcium