Silicone intraocular lens surface calcification in a patient with asteroid hyalosis.
Jpn J Ophthalmol
; 56(4): 319-23, 2012 Jul.
Article
em En
| MEDLINE
| ID: mdl-22573067
ABSTRACT
PURPOSE:
To confirm a substance presence on the posterior intraocular lens (IOL) surface in a patient with asteroid hyalosis.METHODS:
An 80-year-old man had IOLs for approximately 12 years. Opacities and neodymium-doped yttrium aluminum garnet pits were observed on the posterior surface of the right IOL. Asteroid hyalosis and an epiretinal membrane were observed OD. An IOL exchange was performed on 24 March 2008, and the explanted IOL was analyzed using a light microscope and a transmission electron microscope with a scanning electron micrograph and an energy-dispersive X-ray spectrometer for elemental analysis. To confirm asteroid hyalosis, asteroid bodies were examined with the ionic liquid (EtMeIm+ BF4-) method using a field emission scanning electron microscope (FE-SEM) with digital beam control RGB mapping.RESULTS:
X-ray spectrometry of the deposits revealed high calcium and phosphorus peaks. Spectrometry revealed that the posterior IOL surface opacity was due to a calcium-phosphorus compound. Examination of the asteroid bodies using FE-SEM with digital beam control RGB mapping confirmed calcium and phosphorus as the main components.CONCLUSIONS:
Calcium hydrogen phosphate dihydrate deposits were probably responsible for the posterior IOL surface opacity. Furthermore, analysis of the asteroid bodies demonstrated that calcium and phosphorus were its main components.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Elastômeros de Silicone
/
Corpo Vítreo
/
Falha de Prótese
/
Calcinose
/
Oftalmopatias
/
Lentes Intraoculares
Tipo de estudo:
Diagnostic_studies
Limite:
Aged80
/
Humans
/
Male
Idioma:
En
Revista:
Jpn J Ophthalmol
Ano de publicação:
2012
Tipo de documento:
Article
País de afiliação:
Japão