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Article
September 1969

Measurement of the Surface Tension of Tears

Author Affiliations

Boston
From the Massachusetts Eye and Ear Infirmary, Boston.

Arch Ophthalmol. 1969;82(3):368-371. doi:10.1001/archopht.1969.00990020370014
Abstract

The average surface tension of the tears of six human subjects was found to be two-thirds that of water. The experimental method involved the use of a scleral contact lens which contained a circular tear collecting trough. Surface tension measurements using a fine wire ring were carried out while the contact lens rested on the subject's eyes.

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