The active and passive transport of water across the corneal endothelium

The relationship between hydrostatic pressure and water flow across the corneal endothelium of the rabbit was determined at 2 degrees C and 34 degrees C and in each case the layer behaved as if it had a constant leak resistance; the value of the resistances was proportional to the viscosity of water at the temperature in question. Superimposed on this passive flow there appeared to be an active transport of water of 67 microns hr-1 in the warm preparation which completely disappeared when it was cooled.