Excimer Laser Effects on Human Corneal EndotheliumModulation by Serum Factor(s)
Robert W. Lambert, PhD;
Janet A. Anderson, PhD;
Joy Heitzmann, PhD;
Carol J. Sutherland;
Max M. Moore;
Perry S. Binder, MD
Arch Ophthalmol. 1996;114(12):1499-1505.
Abstract
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Objective
To determine the possibility of endothelial cell damage after excimer laser ablation.
Methods
Endothelial cell densities and morphology of human corneas after photoablations or mechanical keratectomy were compared with those of the untreated mates after 1 week of culture with or without serum.
Results
Corneas cultured in serum-free medium after ablation to a depth of 150 µm showed endothelial cell densities reduced to 60% of untreated, mate corneas; ultrastructural analysis showed endothelial cell damage not seen in untreated mates. Corneas ablated to the same depth and cultured in serum-enriched medium showed no endothelial cell density loss, nor did corneas cultured in serum-free medium after an ablation to a depth of 50 µm or mechanical keratectomies averaging 95 µm.
Conclusions
Endothelial cell loss in deep laser resections may be prevented by factor(s) in fetal bovine serum. The apparent lack of cell loss in clinical studies may be related to the protective action of similar factors in aqueous humor.
Author Affiliations
From the National Vision Research Institute, San Diego, Calif (Drs Lambert, Anderson, and Binder and Ms Sutherland and Mr Moore), and the Mericos Eye Institute at Scripps Memorial Hospital, La Jolla, Calif (Dr Heitzmann).
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