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Table 3 Surface tension at the surface-to-air interface for ophthalmic OTC formulations

From: Surface tension examination of various liquid oral, nasal, and ophthalmic dosage forms

Solution Indication Surface tension (dynes/cm)
TheraTears® Lubricant Eye Drops Used to moisten dry eyes and also to relieve burning sensation, irritation and discomfort caused by dry eyes 70.9 ± 0.2
Refresh® Liquigel Lubricant Eye Gel Used for moderate to severe dry eye symptoms 66.4 ± 0.2
Refresh® Optive Lubricant Eye Drops Used to relieve dry, irritated eyes. Decreases symptoms such as irritation, burning 65.6 ± 0.2
Systane® Ultra High Performance Used to relieve dry, irritated eyes. Decreases symptoms such as irritation, burning 61.0 ± 0.3
Systane® Gel Drops Anytime Protection Used to relieve dry, irritated eyes. Decreases symptoms such as irritation, burning 54.3 ± 0.6
Clear Eyes® Contact Lens Multi-Action Relief Relieves dry eyes, rewets lenses, soothes and moisturizes, removes particles from lenses 54.1 ± 0.2
Systane® Balance Restorative Formula For the temporary relief of burning and irritation due to dryness of the eye 46.5 ± 0.4
Tears   ~44
Visine-A® Multi-Action Allergy Relief Temporarily relieves itchy, red eyes due to: pollen, ragweed, grass, animal hair and dander 39.5 ± 0.2
Clear Eyes® Redness Relief Relieves redness of the eye due to minor eye irritations 37.1 ± 0.2
CareOne™ Sterile Eye Drops Relief of redness and irritation of the eye 34.3 ± 0.2