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(Investigative Ophthalmology and Visual Science. 1971;10:288-293.)
© 1971 by The Association for Research in Vision and Ophthalmology, Inc.

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Water Permeability of Cat Corneal Endothelium in vitro

SANG WOOK RHEE 1, KEITH GREEN 2, MIGUEL MARTINEZ 2, and DAVID PATON 3

1 Surgical Research Laboratory, The Wilmer Institute, The Johns Hopkins Hospital, Baltimore, Md.; Department of Ophthalmology, Catholic Medical College and Center, Seoul, Korea
2 Surgical Research Laboratory, The Wilmer Institute, The Johns Hopkins Hospital, Baltimore, Md.
3 Surgical Research Laboratory, The Wilmer Institute, The Johns Hopkins Hospital, Baltimore, Md.; Department of Ophthalmology, Baylor College of Medicine, Houston, Texas

A water permeability study of the isolated cat corneal endothelium was performed with the use of a newly designed Lucite chamber and modified experimental methods. The hydraulic conductivity of the cat endothelium was 9.3 ± 1.09 x 10-7 cm. sec-1 atm-1. The Staverman reflection coefficient to NaCl of cat endothelium was 0.6. It was determined that the resistance to the passage of either water or small solutes is negligible in the swollen stroma. The results suggest that the intercellular space of the cat endothelium is less than that of the rabbit.

Note:
Dr. Green is the recipient of a United States Public Health Service Research Career Development Award (K4 EY 46-354) from the National Eye Institute.

Key Words: cat • endothelium • water permeability • sodium chloride permeability • intercellular space

Submitted on December 28, 1970
Accepted on February 22, 1971






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Copyright © 1971 by the Association for Research in Vision and Ophthalmology