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Investigative Ophthalmology & Visual Science, Vol 24, 227-236, Copyright © 1983 by Association for Research in Vision and Ophthalmology

ARTICLES AND REPORTS

Effects of phacoemulsification and extracapsular lens removal on corneal thickness and endothelial cell density in the dog

RM Gwin, JK Warren, DA Samuelson and GG Gum

Twenty-one dogs were used to study the effects of phacoemulsification and extracapsular lens removal on corneal endothelium and corneal thickness. Specular microscopy revealed preoperative cell morphology and cell densities similar to man. After surgery endothelial cell counts significantly decreased 22% (central) and 13% (periphery) with phacoemulsification and 34% (central) and 31% (periphery) with extracapsular lens removal. Corneal thickness increased with both procedures. Endothelial cell pathology included cellular enlargement, increased pleomorphism, and focal cellular degeneration. Phacoemulsification time did not correlate with the degree of cell loss. Dog corneal endothelium responds to surgical trauma in a manner similar to man and maintains a functional monolayer via cellular enlargement and migration. The dog, therefore, represents a good animal model for the study of corneal endothelial disease in man.




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Copyright © 1983 by the Association for Research in Vision and Ophthalmology