Soemmering's ring, an aspect of secondary cataract: a morphological description by SEM.
A Soemmering's ring attached to a patient's I.O.L. was removed and processed for SEM-examination. The enveloping structure of the Soemmering's ring was clearly of capsular origin, adherent along a single line and forming an envelope around the inner material. The envelope had a membranous character. The contents of the ring varied from the outside to the centre. Close to the capsule envelope a more or less amorphous material was found. Most of the contents of the ring was made up of lens-fibre material. Sometimes clear lens fibres were visible with densely packed lens-fibre proteins, sometimes with clusters of recrystallized proteins, rod-shaped or spherical, surrounded by what appeared to be amorphous material. The recrystallized and the amorphous lens-fibre material are similar to material found in cataractous lenses.
Jongebloed
W L
WL
Centre for Medical Electron Microscopy, University of Groningen, The Netherlands.
Dijk
F
F
Kruis
J
J
Worst
J G
JG
D002386:Cataract / Q000473:pathology*; D006801:Humans; D007903:Lens Capsule, Crystalline / Q000473:pathology* / Q000648:ultrastructure; D007908:Lens, Crystalline / Q000473:pathology* / Q000648:ultrastructure; D007910:Lenses, Intraocular; D008855:Microscopy, Electron, Scanning