alexa Clinical benefits of a new multipurpose disinfecting solution in silicone hydrogel and soft contact lens users.
Pharmaceutical Sciences

Pharmaceutical Sciences

Biochemistry & Pharmacology: Open Access

Author(s): Campbell R, Kame G, Leach N, Paul M, White E,

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Abstract OBJECTIVES: To evaluate the safety and efficacy of a new multipurpose disinfecting solution (MPDS) containing a diblock copolymer, poly(oxyethylene)-poly(oxybutylene), designed to improve the wetting properties of silicone-hydrogel lenses. METHODS: This 90-day, randomized, concurrently controlled, double-masked, multisite study involved 573 subjects at 30 investigational sites in the United states. Existing lens wearers were randomly assigned to either regimen 1 (OPTI-FREE PureMoist, a newly developed formulation, Alcon Laboratories Inc., Fort Worth, TX) or regimen 2 (renu fresh, Bausch and Lomb Inc., Rochester, NY). At baseline, days 7, 30, 60, and 90, the subjects recorded subjective evaluations relating to lens acceptability and comfort, wearing time, and rewetting drop frequency, whereas investigators assessed slitlamp findings (including corneal fluorescein staining), lens deposits (modified Rudko), visual acuity, and adverse events. Group IV lenses were collected for ex vivo measurement of lysozyme deposits. RESULTS: Differences favoring regimen 1 were noted on day 90 for subjective evaluations of lens comfort (insertion, removal, overall); lens moisture and freshness; gentle on eye; clear vision; and lens handling (all P<0.004). Corneal fluorescein staining severity and area and lysozyme deposits (group IV lenses) were lower with regimen 1 (P<0.0001). CONCLUSIONS: This 90-day study shows that the new MPDS designed for silicone-hydrogel lenses is safe and effective when used by both silicone-hydrogel and traditional soft lens wearers. By improving comfort and decreasing lysozyme deposits and corneal fluorescein staining, the new MPDS enhances patients' wearing experience and helps maintain optimal lens performance. This article was published in Eye Contact Lens and referenced in Biochemistry & Pharmacology: Open Access

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