The landscape of ocular correction has undergone a fundamental transformation with the integration of silicone hydrogel materials into the one-day replacement segment. For the UK consumer, the transition from traditional hydrogel to silicone hydrogel represents more than a simple material change; it is a shift toward enhanced corneal health and long-term ocular viability. At the forefront of this evolution are the MyDay and clariti 1 day offerings from CooperVision, products designed to bridge the gap between the necessity for high oxygen transmissibility and the desire for a lens that feels nearly invisible on the eye. The technical challenge historically associated with silicone hydrogel was a problematic trade-off: while silicone increased the ability to transmit oxygen—a critical factor for the health of the cornea, which lacks its own blood supply—it often resulted in a lens that was stiffer, less wettable, and consequently less comfortable for the wearer. This friction point once hindered the growth of the daily disposable silicone hydrogel market, as patients were often forced to choose between the health benefits of oxygen permeability and the physical comfort of traditional hydrogel.
Modern innovations, specifically the introduction of Smart Silicone within the Aquaform comfort science framework, have effectively dismantled this trade-off. By creating a unique network of silicone channels, the material can transmit oxygen more efficiently without requiring a high volume of silicone throughout the lens matrix. This results in a more hydrophilic material, which means the lens attracts and retains water more effectively, ensuring longer-lasting wettability throughout a full day of wear. For the end-user, this manifests as a soft, flexible lens that maintains its moisture levels, reducing the "dry eye" sensation often reported during the final hours of a working day. This technological leap ensures that the wearer does not have to sacrifice the ease of handling or the softness of the lens to achieve the clinical benefits of a silicone hydrogel material.
The Clinical Imperative of Silicone Hydrogel Material
The shift toward silicone hydrogel is not merely a marketing trend but a clinical necessity driven by the physiological requirements of the human eye. The cornea requires a constant supply of oxygen from the atmosphere to remain clear and healthy. Traditional hydrogel lenses rely on the movement of water to transport oxygen; however, silicone hydrogel allows oxygen to pass through the material itself, significantly increasing the amount of oxygen that reaches the cornea.
The impact of this increased oxygen transmissibility is profound. High oxygen delivery helps to minimise or even eliminate hypoxia-related complications, which occur when the cornea is deprived of sufficient oxygen. This is particularly vital for patients with busy, modern lifestyles who may wear their lenses for extended hours. When the eye receives adequate oxygen, the result is the maintenance of clear, white eyes, preventing the redness and irritation associated with oxygen deprivation.
The professional consensus among Eye Care Professionals (ECPs) underscores this shift. Evidence indicates that a significant majority of ECPs—nearly 9 in 10—agree that one-day replacement lenses should be manufactured from silicone hydrogel materials, mirroring the standards already established for frequent replacement lenses. Furthermore, the professional community practices what it prescribes, with 7 in 10 ECPs admitting that silicone hydrogel is the material they choose for their own personal lens wear. This trend is further evidenced by the fact that a vast majority of all soft contact lens fits globally now utilise silicone hydrogel materials, confirming its status as the gold standard for modern ocular health.
MyDay Daily Disposable Technical Specifications and Benefits
The MyDay range is positioned as a premium, high-performance solution for both myopic (near-sighted) and hyperopic (far-sighted) patients. By utilising Aquaform Technology, these lenses achieve a sophisticated balance of high oxygen permeability, high water content, and an optimum modulus, which refers to the stiffness of the material.
The primary benefit of the Aquaform approach is the delivery of unsurpassed comfort. Because the lens is made from the softest silicone hydrogel material available in the range, it provides a superior wearing experience compared to leading hydrogel one-day brands. This softness is paired with premium optics designed to deliver vision that is clear, crisp, and sharp, ensuring that the wearer's visual acuity is not compromised by the material's flexibility.
A critical feature of the MyDay lens is its ability to cover a vast array of prescriptions, providing vision correction for 99.9% of spherical prescriptions. This makes it a versatile choice for a wide demographic of patients, from those with mild refractive errors to those with more significant prescriptions.
The following table outlines the specific power ranges available for MyDay lenses:
| Prescription Type | Power Range | Step Increments |
|---|---|---|
| Myopic (Negative) | -6.00 to -0.25DS | 0.25D steps |
| Hyperopic (Positive - Low) | +0.25 to +5.00DS | 0.25D steps |
| Hyperopic (Positive - High) | +5.50 to +8.00DS | 0.50D steps |
Beyond the visual and physical specifications, MyDay lenses incorporate a UV blocker. This is designed to help protect the eye from the transmission of harmful UV rays. It is essential, however, for consumers to understand that these lenses are not a substitute for protective UV-absorbing eyewear, such as sunglasses or goggles, as the lenses do not cover the entire eye and the surrounding orbital area.
clariti 1 day Analysis and Value Proposition
While MyDay represents the top-of-the-line performance, the clariti 1 day range is engineered to provide a combination of ocular health and exceptional value. Like MyDay, clariti 1 day is a silicone hydrogel lens for myopic and hyperopic patients, ensuring that the benefits of high oxygen transmissibility are accessible to a broader range of users.
The clariti 1 day lens utilises WetLoc Technology combined with an Optimised Comfort Edge design. This dual approach focuses on maintaining moisture on the lens surface while ensuring the edge of the lens interacts smoothly with the eyelid, reducing friction during blinking. This results in all-day comfort and "unbeaten handling," making the application and removal process simpler for new or experienced users.
The oxygen transmissibility of clariti 1 day is significantly higher than that of conventional hydrogel lenses. Specifically, clariti 1 day possesses a Dk/t (oxygen transmissibility) of 86. When compared to other lenses, the difference is stark:
- Proclear 1 day: Dk/t 28
- 1-day Acuvue Moist: Dk/t 25.5
- Dailies Aquacomfort Plus: Dk/t 26
- Biotrue ONEday: Dk/t 42
This means clariti 1 day provides more than three times the oxygen transmissibility of several conventional hydrogel one-day replacement lenses. This high level of oxygen delivery is crucial for maintaining optimal ocular health and preventing the complications associated with hypoxia.
The power ranges for clariti 1 day are slightly different from the MyDay range, as detailed below:
| Prescription Type | Power Range | Step Increments |
|---|---|---|
| Myopic (Negative) | -6.00 to -0.50DS | 0.25D steps |
| Hyperopic (Positive - Low) | +0.50 to +6.00DS | 0.25D steps |
| Hyperopic (Positive - High) | +6.50 to +8.00DS | 0.50D steps |
Similar to the MyDay range, clariti 1 day includes a UV blocker to protect the eye from harmful rays, with the same caveat that they do not replace the need for sunglasses.
Comparative Environmental Impact and Sustainability
A distinguishing factor in the modern contact lens market is the commitment to environmental sustainability, a move spearheaded by CooperVision for both the MyDay and clariti 1 day product lines. Given that daily disposable lenses generate a significant amount of single-use plastic waste, the implementation of a plastic-neutral strategy is a critical ethical advancement.
Both MyDay and clariti 1 day are classified as plastic neutral. This is achieved through a strategic partnership with Plastic Bank. For every box of MyDay or clariti 1 day lenses sold and distributed, CooperVision offsets the plastic waste by collecting and converting an equal amount of plastic from the environment.
The impact of this initiative is as follows:
- Environmental Mitigation: It prevents the equivalent weight of the product's plastic from entering oceans and landfills.
- Corporate Responsibility: It transforms a disposable medical device into a vehicle for environmental cleanup.
- Consumer Peace of Mind: It allows the wearer to benefit from the hygiene and convenience of daily disposables without the associated guilt of plastic pollution.
For the MyDay portfolio specifically, this means the entire range is now net plastic neutral, ensuring that the high performance of the lens is matched by a commitment to the planet.
The Dynamics of Patient and Practitioner Decision Making
The transition of patients from frequent replacement lenses (which may be worn for two weeks or a month) to one-day replacements is a growing trend in the UK and globally. This movement is heavily influenced by the Eye Care Professional (ECP).
Research into ECP behaviour reveals a strong conviction in the superiority of silicone hydrogel for all wearing schedules. The data shows that:
- 90% of ECPs believe one-day lenses should be silicone hydrogel, just like frequent replacement lenses.
- 70% of ECPs use these lenses themselves.
Interestingly, the decision to switch a patient to a one-day lens is almost exclusively driven by the ECP. Patients demonstrate a high level of trust in their practitioner, with a significant majority stating that they make their final lens decisions based on the recommendations of their ECP.
The reasons for sticking with traditional hydrogel are vanishing. In contemporary clinical settings, 0% of ECPs report prescribing one-day hydrogels over silicone hydrogels solely due to price. Furthermore, 0% of ECPs believe that patients do not wear their lenses enough to require the oxygen benefits of silicone hydrogel. This indicates a universal professional agreement that the physiological benefits of silicone hydrogel are necessary for all wearers, regardless of their daily usage hours.
Summary of Technological Advantages
To understand the superiority of these lenses, one must look at the specific technologies employed to overcome the inherent limitations of silicone.
The Aquaform Technology used in MyDay is the primary differentiator. It addresses the "silicone paradox" where high oxygen permeability usually equals low comfort. By using Smart Silicone, the lens achieves:
- Higher Oxygen Permeability: Ensuring corneal health and white eyes.
- Higher Water Content: Increasing the hydrophilicity of the material.
- Optimum Modulus: Maintaining a balance between the flexibility needed for comfort and the stiffness needed for easy handling.
The result is a lens that is not only healthier for the eye but is also more comfortable for the wearer. This is complemented by the WetLoc Technology found in the clariti range, which ensures that the lens surface remains hydrated, further reducing the risk of end-of-day dryness.
Conclusion: The Future of Daily Ocular Correction
The analysis of the MyDay and clariti 1 day ranges reveals a clear trajectory in the contact lens industry: the prioritisation of corneal health through high oxygen transmissibility without the compromise of wearer comfort. The integration of Aquaform and WetLoc technologies represents a sophisticated response to the historical failures of early silicone hydrogels. By solving the issues of stiffness and low wettability, CooperVision has created a product ecosystem where the user can enjoy the clinical safety of a high Dk/t material while experiencing the physical ease of a traditional hydrogel.
From a consumer perspective, the choice between MyDay and clariti 1 day comes down to a balance of performance and value. MyDay offers a premium, "top of the line" experience with a broader prescription range and a focus on unsurpassed softness. clariti 1 day provides an exceptional value proposition, offering a level of oxygen transmissibility that dwarfs many conventional hydrogel competitors while maintaining a high standard of handling and comfort.
The environmental commitment to plastic neutrality further elevates these products, addressing a primary criticism of the daily disposable model. By offsetting plastic waste through the Plastic Bank partnership, the transition to one-day silicone hydrogel lenses becomes a sustainable choice as well as a healthy one. Ultimately, the evidence suggests that the shift toward silicone hydrogel is inevitable and beneficial, driven by a combination of professional recommendation and technological breakthroughs that ensure the eye remains healthy, the vision remains sharp, and the environment is protected.