A longitudinal case series investigating cellular changes to the transplanted cornea using confocal microscopy

Hollingsworth, Joanna G., Efron, Nathan, & Tullo, Andrew B. (2006) A longitudinal case series investigating cellular changes to the transplanted cornea using confocal microscopy. Contact Lens and Anterior Eye, 29(3), pp. 135-141.

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Abstract

PURPOSE: To perform a longitudinal evaluation of subjects who had undergone penetrating keratoplasty, using slit scanning confocal microscopy. METHODS: In vivo confocal microscopy was used to evaluate the central cornea of four subjects who had recently undergone penetrating keratoplasty. Subjects were examined on four occasions over a 12-month period after surgery. Quantitative and qualitative aspects of corneal morphology were compared against data from normal control subjects. RESULTS: The epithelium varied in appearance between subjects and took at least 12 months to return to a similar arrangement to that seen in normal eyes. Bowman's layer was viewed as an acellular layer immediately after surgery with no evidence of nerve fibres, although nerve components were apparent 12 months after surgery. Stromal nerves were not visible immediately after surgery. One year following penetrating keratoplasty there was evidence of thin nerves running a straight course through the central stroma. Keratocyte density in the anterior and posterior stroma was lower in the transplanted cornea but appeared to remain constant over a period of 1 year. Activated keratocytes were seen in the anterior stroma of all subjects; they appeared to be responsible for significant levels of corneal haze. The time period within which this keratocyte activation occurred varied between individuals. Endothelial cell density decreased at an accelerated rate over the 12-month period. CONCLUSIONS: Confocal microscopy allows cellular changes to be monitored in vivo following penetrating keratoplasty and may assist clinicians in understanding postoperative recovery.

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ID Code: 11269
Item Type: Journal Article
Refereed: Yes
Keywords: Confocal microscopy, Penetrating keratoplasty, Keratocyte density, Corneal nerves, Endothelial cell density
DOI: 10.1016/j.clae.2006.03.005
ISSN: 1367-0484
Subjects: Australian and New Zealand Standard Research Classification > MEDICAL AND HEALTH SCIENCES (110000) > OPTOMETRY AND OPHTHALMOLOGY (111300)
Divisions: Current > Research Centres > Centre for Health Research
Current > QUT Faculties and Divisions > Faculty of Health
Current > Institutes > Institute of Health and Biomedical Innovation
Current > Schools > School of Optometry & Vision Science
Copyright Owner: Copyright 2006 Elsevier
Copyright Statement: Reproduced in accordance with the copyright policy of the publisher.
Deposited On: 03 Jan 2008 00:00
Last Modified: 29 Feb 2012 13:23

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