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What Is Smart Silicone Technology?

Smart Silicone technology is CooperVision's silicone hydrogel material chemistry used in the MyDay family, including MyDay Daily Disposable Toric. The chemistry arranges silicone into efficient oxygen-carrying channels so the lens can reach high oxygen performance with a relatively low proportion of silicone. CooperVision reports that the MyDay material has a silicon content of about 4.4% while leaving more room for hydrophilic components. The resulting stenfilcon A material has 54% water content and is designed for daily disposable wear.

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What Is Smart Silicone Technology?

Smart Silicone technology is CooperVision's silicone hydrogel material chemistry used in the MyDay family, including MyDay Daily Disposable Toric. The chemistry arranges silicone into efficient oxygen-carrying channels so the lens can reach high oxygen performance with a relatively low proportion of silicone. CooperVision reports that the MyDay material has a silicon content of about 4.4% while leaving more room for hydrophilic components. The resulting stenfilcon A material has 54% water content and is designed for daily disposable wear.

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Why Is Smart Silicone Technology Used?

Silicone increases oxygen permeability in soft contact lenses, but silicone itself is naturally hydrophobic. Smart Silicone technology is designed to use the oxygen-carrying material more efficiently so less raw silicone is needed within the lens matrix. That leaves a larger proportion of hydrophilic material that interacts with water. In MyDay Daily Disposable Toric, this material technology works alongside a separate Optimized Toric Lens Geometry that controls orientation for astigmatism correction.

How Does Smart Silicone Technology Work?

CooperVision describes the chemistry as long-chain silicone molecules arranged into channels that transport oxygen through the lens. Efficient oxygen pathways mean the material does not need as much silicone to reach the intended oxygen transmissibility. The remaining material can contain more hydrophilic components, producing the characteristic balance of oxygen transport and water content found in stenfilcon A. Smart Silicone describes the material chemistry and does not determine the wearer's sphere, cylinder, axis, or other prescription values.

Which Contact Lenses Use Smart Silicone Technology?

Smart Silicone chemistry is associated with CooperVision's MyDay daily disposable platform. The family includes spherical, toric, multifocal, and Energys options, although each product can add a different optical or stabilization design for its intended correction. MyDay Daily Disposable Toric combines Smart Silicone with Optimized Toric Lens Geometry for astigmatism. The technology should not be treated as interchangeable with every other CooperVision silicone hydrogel material platform.

What Should Wearers Know About Smart Silicone Technology?

Material technology is only one part of how a contact lens performs on an individual eye. Lens fit, prescription accuracy, tear-film characteristics, replacement schedule, and wearing habits also affect vision and comfort. MyDay Daily Disposable Toric is intended for single-day use and is not approved for overnight wear. Its built-in UV blocker also does not replace sunglasses because contact lenses cover only part of the eye.

Common Questions About Smart Silicone Technology

How much silicone is used in Smart Silicone chemistry?

CooperVision states that the MyDay material has a silicon content of about 4.4% while maintaining efficient oxygen transport through its silicone-channel structure.

Does Smart Silicone technology correct astigmatism?

No. Smart Silicone is a material technology. Astigmatism correction in MyDay Daily Disposable Toric comes from the toric prescription and Optimized Toric Lens Geometry.

What material uses Smart Silicone technology?

MyDay lenses use stenfilcon A, a silicone hydrogel material with 54% water content.

Can MyDay lenses with Smart Silicone technology be worn overnight?

No. MyDay lenses are designed for daily wear and should be removed and discarded after use rather than worn during sleep.

References

Smart Silicone™ Chemistry. CooperVision. https://coopervision.co.uk/practitioner/our-products/contact-lens-technology/smart-silicone-chemistry. Date Accessed November 3, 2026.

CooperVision Presents MyDay? Lenses in the U.S.. CooperVision. https://coopervision.com/insight-newsletter-archivejulyaugust-2015-insight-issue/coopervision-introduces-myday-lenses-us. Date Accessed November 3, 2026.

Product Reference Guide. CooperVision. https://coopervision.com/sites/coopervision.com/files/media-document/coopervision-product-reference-guide-052026.pdf. Date Accessed November 3, 2026.

MyDay? Daily Disposable Toric. CooperVision. https://coopervision.com/contact-lenses/myday-daily-disposable-toric. Date Accessed November 3, 2026.

Contact Lens Risks. U.S. Food and Drug Administration. https://www.fda.gov/medical-devices/contact-lenses/contact-lens-risks. Date Accessed November 3, 2026.