Abstract: Lubricants and lenses

A little study comparing contact lens comfort after 6 hours wear if no lubricant was used, saline, or an OTC lubricating drop. Bottom line - type of lens matters more than what lubricant is used.

Lubricant effects on low Dk and silicone hydrogel lens comfort.
Optom Vis Sci. 2008 Aug;85(8):773-7.
Ozkan J, Papas E.

PURPOSE: To investigate the influence of three lubricants of varying viscosity, on postinsertion and 6 h comfort with contact lens wear.

METHODS: Comfort and associated symptoms of dryness were assessed in 15 experienced contact lens wearers. Subjects wore a low Dk lens in one eye and a silicone hydrogel in the other and participated in four separate trials involving no lubricant (baseline), saline, and two commercially available lubricants of differing viscosity. The in-eye lubricants were used immediately following lens insertion and every 2 h postinsertion for a 6 h wear period.

RESULTS: Postlens insertion comfort was significantly better for both lens types when lubricants or saline were used compared with no lubricant use. After 6 h lens wear, comfort was influenced by lens type and not by in-eye lubricant or saline use. Also after 6 h lens wear, less dryness sensation was reported for silicone hydrogel lenses when using lubricants but not saline.

DISCUSSION: Although lubricant use does help reduce dryness symptoms with silicone hydrogel lens wear, there appears to be minimal longer-term benefit to comfort. Furthermore, increased lubricant viscosity did not lead to improved longer-term comfort.