We have ever-higher expectations when it comes to comfort. Also for contact lenses. Consequently, one of the main reasons for lens wearers to drop out is discomfort.1 Pioneer Alcon is therefore focusing on improving the lens experience with its innovative Water SurfaceTM lens technology. Are you already familiar with the effects of this technology?

1. Water content

To improve comfort, Alcon's Water SurfaceTM technology increases the water content on the surface of the lens. With its DAILIES TOTAL1TM daily lenses and TOTAL30TM monthly lenses, Alcon has even managed to develop lenses that have up to 100% water content on the lens surface!2-5

2. Wearing comfort

When you wear a contact lens, it sits between your cornea and the delicate tissues of the eyelid. Every time you blink, the surface of the contact lens rubs and rubs between these delicate tissues. People blink an average of 14 000 times a day.6 Imagine for a moment that you were to rub your hands together 14 000 times. Wouldn't they feel very warm and painful?

Contact lenses with higher lubrication, such as those with Water SurfaceTM technology, have a proven lower shear stress, resulting in a greater wearing experience.7,8***

3. Lens rotation and oxygen permeability

If a contact lens is out of place or rotates a lot while blinking, it can cause blurred vision and discomfort. Especially for toric lenses, lens rotation stability is crucial for consistent and sharp vision.

Alcon's Water SurfaceTM lenses therefore feature Precision Balance 8|4 technology. This is designed to work together with the eye blink mechanism and reduces interaction with the lower eyelid for comfort. In addition, this technology ensures high oxygen permeability.9


More info on our innovations, ranges and useful platforms can be found on our MyAlcon website.

*Result individually dependent and may be influenced by any pre-existing conditions. **Based on an in vitro study in which wettability was measured using the iDDrop System. All lenses were tested identically, soaked in PBS (phosphate-buffered saline) for 16 hours (±2 hours) (p<0.05). ***Based on in vitro measurements of Verofilcon A and Delefilcon A compared with Somofilcon A, StenfilconA, Etafilcon A. ****Based on in vitro measurements of unworn lenses.

1. Based on third-party research conducted in 2021 across 2,006 reusable contact lens wearers and 200 eye care professionals in the U.S., Germany, Spain and Italy; Alcon data on file, 2021.
2. Thekveli S, Qui Y, Kapoor Y, et al. Structure-property relationship of delefilcon A lenses. Contact Lens Anterior Eye. 2012;35(Suppl 1):e14.
3. Angelini TE, Nixon RM, Dunn AC, et al. Viscoelasticity and mesh-size at the surface of hydrogels characterized with microrheology. Invest Ophthalmol Vis Sci. 2013;54:E-abstract 500.
4. In vitro analysis of lens oxygen permeability, water content, and surface imaging; Alcon data on file, 2021.
5. In vitro analysis of lehfilcon A contact lenses outermost surface softness and correlation with water content; Alcon data on file, 2021.
6. Griff A, Hersh E. Healthline: How Many Times Do You Blink in a Day. Accessed July 7, 2023.
7. Sawyer WG et al Low Friction and Low Modulus Contact Lens Surfaces improve lubricity and reduce cell damage in corneal epithelial cell models Poster presented at the 2019 AAO October 23-26 Orlando FL.
8. Hart SM, McGhee EO, Uruena JM, et al. Surface Gel Layers Reduce Shear Stress and Damage of Corneal Epithelial Cells. Tribology Letters 2020; 68: 106.
9. Based on in vitro measurement of thickness profiles on unworn lenses; Alcon data on file, 2019.
For indications, contraindications and warnings, please refer to the instructions for use of the relevant product. Contact lenses are medical devices. ©2023 Alcon BNLX-T30-2300052



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