Ultrastructure of the anterior lens capsule and epithelium in cataracts associated with uveitis.
OBJECTIVE
To study the ultrastructure of the anterior lens capsule and epithelium, and capsular thickness in uveitic cataracts.


METHODS
Capsulorhexis samples from 20 uveitic cataracts were compared to 20 nuclear cataracts using the semi- and ultra-thin techniques.


RESULTS
Extensive epithelial and capsular-epithelial border changes and epithelial-mesenchymal transition in some fibrotic capsules were found only in the uveitic group. All these changes were observed predominately in white uveitic cataracts. Mild and moderate ultrastructural changes were seen in both groups. Surface deposition of amorphous material was also found only in uveitic cataracts. Capsular thickness was not different between the two groups.


CONCLUSIONS
Uveitic capsules showed more extensive and different ultrastructural changes that probably occurred because of inflammation in the eye and epithelial-mesenchymal transition. These changes might be an additional reason for altered behavior of the lens capsule at capsulorhexis.
Eye Hospital, University Medical Centre Ljubljana, Ljubljana, Slovenia. spela.stunf@siol.net
Spela
S
Stunf
Anastazija
A
Hvala
Nataša
N
Vidovič Valentinčič
Aleksandra
A
Kraut
Marko
M
Hawlina
D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D057866:Anterior Capsule of the Lens / Q000648:ultrastructure*; D002386:Cataract / Q000209:etiology / Q000473:pathology*; D004847:Epithelial Cells / Q000648:ultrastructure*; D005260:Female; D006801:Humans; D019654:Lens Implantation, Intraocular; D007908:Lens, Crystalline / Q000648:ultrastructure; D008297:Male; D046529:Microscopy, Electron, Transmission; D008875:Middle Aged; D018918:Phacoemulsification; D014605:Uveitis / Q000150:complications*; D055815:Young Adult