[en] Solutions of ²²NaCl in saline or distilled water differ with respect to their ocular uptake. Studies were performed on eyes of living rabbits as well on the enucleated rabbit eyes. Chromatographic paper strips (15x2 mm) were soaked in both solutions, stretched over the cornea and left in contact for 1 min. Radioactivities of paper strips and rabbit eyes were measured and the ocular uptake of ²²Na was expressed as percentual values of the total radioactivities contained in the paper strips before their application to the corneal surface. Values of the ocular uptake of ²²NaCl solved in distilled water exceeded more than twice the values found in experiments where ²²Na solution in saline was used. The use of carrier-free ²²NaCl solutions in distilled water is recommended for the method measuring the ocular uptake hydrodynamics on basis of ocular ²²Na clearance. Uptake of ²²Na in enucleated eyes was twenty-five per cent higher in comparison with the eyes of living rabitts. (author)