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What Is the ACTIV-FLO System?

The ACTIV-FLO System is Alcon's contact lens technology developed for PRECISION7 and PRECISION7 for Astigmatism, which follow a one-week replacement schedule. It combines a water-loving moisturizing agent embedded in the lens matrix with a proprietary replenishing agent. One component remains bound within the serafilcon A material, while the other is released from the lens over time. Alcon describes the system as a seven-day sustained-release technology designed to maintain surface moisture across the weekly replacement cycle.

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What Is the ACTIV-FLO System?

The ACTIV-FLO System is Alcon's contact lens technology developed for PRECISION7 and PRECISION7 for Astigmatism, which follow a one-week replacement schedule. It combines a water-loving moisturizing agent embedded in the lens matrix with a proprietary replenishing agent. One component remains bound within the serafilcon A material, while the other is released from the lens over time. Alcon describes the system as a seven-day sustained-release technology designed to maintain surface moisture across the weekly replacement cycle.

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Why Is the ACTIV-FLO System Used in Contact Lenses?

The ACTIV-FLO System is designed to help a reusable lens maintain surface moisture from the beginning through the end of a seven-day replacement period. Alcon developed PRECISION7 as a shorter-cycle reusable option between daily disposable and longer replacement schedules. The system targets comfort and moisture stability during long wearing days and across repeated use. Actual lens comfort still varies with fit, tear film, cleaning habits, environment, and individual response.

How Does the ACTIV-FLO System Work?

The system combines two moisture-related components within the serafilcon A lens material. A permanently bound hydrophilic agent increases the material's affinity for water. A separate replenishing agent begins moving from the lens core toward the surface after the lens leaves its package and continues releasing across the seven-day cycle. Alcon reports comfort at 16 hours, including on day seven, in a clinical study.

Which Contact Lenses Use the ACTIV-FLO System?

The ACTIV-FLO System is used in Alcon PRECISION7 one-week replacement contact lenses. It appears in PRECISION7 sphere lenses and PRECISION7 for Astigmatism. Both lenses use serafilcon A and follow a one-week replacement schedule. The toric version adds an astigmatism-specific optical and stabilization design while retaining the same core ACTIV-FLO material system.

What Should Wearers Know About the ACTIV-FLO System?

ACTIV-FLO is a material and moisture-management feature rather than a substitute for correct lens care. For daily wear, remove PRECISION7 lenses before sleep and clean, disinfect, and store them after each use. The lenses are also approved for extended wear of up to six nights and seven days, but only under an eye care professional's direction. Sleeping in contacts increases the risk of serious eye infections. Follow the prescribed wear, care, and one-week replacement schedule.

Frequently Asked Questions About the ACTIV-FLO System

Which contact lenses use the ACTIV-FLO System?

Alcon uses the technology in PRECISION7 and PRECISION7 for Astigmatism one-week replacement contact lenses.

What does sustained release mean in the ACTIV-FLO System?

It refers to a replenishing agent that moves from the lens core toward the surface over the seven-day replacement cycle rather than being released all at once.

What material is used with the ACTIV-FLO System?

PRECISION7 lenses use serafilcon A, a silicone hydrogel material with 55% water content.

Is PRECISION7 replaced every seven days?

Yes. PRECISION7 is designed around a one-week replacement schedule, with care and wear directed by an eye care professional.

References

PRECISION7? Parameters and Technical Specifications. Alcon. https://www.myalcon.com/professional/contact-lenses/weekly/precision7/. Date Accessed October 21, 2026.

PRECISION7? for Astigmatism Parameters and Specifications. Alcon. https://www.myalcon.com/professional/contact-lenses/weekly/precision7-for-astigmatism/. Date Accessed October 21, 2026.

Infusing Cutting-Edge Science in a 7-Day Contact Lens. Alcon. https://www.alcon.com/featured-stories/infusing-cutting-edge-science-7-day-contact-lens/. Date Accessed October 21, 2026.

Sustained Release of a Polymeric Wetting Agent from a Silicone-Hydrogel Contact Lens Material. ACS Omega (PubMed). https://pubmed.ncbi.nlm.nih.gov/36033690/. Date Accessed October 21, 2026.

Contact Lens Risks. U.S. Food and Drug Administration. https://www.fda.gov/medical-devices/contact-lenses/contact-lens-risks. Date Accessed October 21, 2026.