Lotrafilcon B Contact Lenses

SmartShield Technology is a permanent surface treatment used in several lotrafilcon B contact lenses within the AIR OPTIX family. Instead of changing the lens prescription or optical design, it modifies the outer surface of the lens to help reduce exposed silicone. This creates a thin protective layer that helps resist the buildup of certain deposits and supports a more consistently wettable surface during the monthly wearing cycle.

Since monthly contact lenses are removed, cleaned, and reused for several weeks, proteins, lipids, cosmetics, and environmental particles can gradually accumulate on the lens surface. SmartShield Technology is designed to help reduce the attachment of these deposits, making the lens easier to keep clean as part of the recommended care routine. It works alongside regular cleaning and disinfecting but does not replace proper lens hygiene or the prescribed replacement schedule.

SmartShield Technology is separate from HydraGlyde Moisture Matrix, although some AIR OPTIX lenses include both. SmartShield focuses on protecting the lens surface from deposits, while HydraGlyde is designed to attract and retain moisture at the lens surface. Together, these technologies perform different functions while supporting the overall performance of lotrafilcon B contact lenses.

AIR OPTIX COLORS uses lotrafilcon B because it combines the benefits of a monthly silicone hydrogel material with a lens designed to change or enhance eye color. Adding a cosmetic color pattern does not change the need for oxygen transmission, surface wettability, or a stable monthly lens platform. Lotrafilcon B provides the material foundation, while the printed color design is incorporated separately into the finished lens.

Like other AIR OPTIX products, AIR OPTIX COLORS includes SmartShield Technology to help protect the lens surface from deposits during repeated wear. The color pattern is sealed within the lens material rather than sitting on the surface, allowing the front of the lens to remain smooth while the cosmetic design stays protected during normal handling and cleaning.

Although AIR OPTIX COLORS is available with and without vision correction, it is still a prescription medical device that requires a proper contact lens fitting. Choosing a colored contact lens involves more than selecting a shade. Your eye doctor also determines the correct base curve, diameter, and overall fit so the lens provides both healthy wear and the appearance you want.

Lotrafilcon A and lotrafilcon B are both silicone hydrogel contact lens materials developed by Alcon, but they are used in different contact lenses and are prescribed for different purposes. Although they share a similar foundation, each material has its own water content, oxygen permeability, and lens designs.

Lotrafilcon A is best known for AIR OPTIX Night & Day Aqua, a lens approved for extended wear under the supervision of an eye doctor. Lotrafilcon B is used across the broader AIR OPTIX family, including AIR OPTIX Aqua, AIR OPTIX plus HydraGlyde, AIR OPTIX COLORS, and their toric and multifocal versions. Rather than focusing on overnight wear, lotrafilcon B supports a wider range of monthly lenses designed for different prescriptions and visual needs.

Although the two materials belong to the same silicone hydrogel family, they are not interchangeable. Each contact lens combines its material with a specific optical design, surface technology, replacement schedule, and fitting characteristics. If your prescription specifies lotrafilcon A or lotrafilcon B, order the exact lens your eye doctor prescribed instead of choosing a lens based only on the material name.

Monthly contact lenses are worn repeatedly over several weeks, so the material must continue performing through daily insertion, removal, cleaning, and storage. Lotrafilcon B was developed as a silicone hydrogel material that combines high oxygen permeability with a plasma-treated surface, making it well suited to the demands of reusable monthly lenses. Rather than relying on high water content, it uses silicone as the primary pathway for oxygen transmission while the surface treatment supports wettability during repeated wear.

Unlike daily disposable lenses that are discarded after a single use, monthly lenses must withstand regular handling and exposure to proteins, lipids, cosmetics, and environmental particles. For that reason, the finished lens incorporates additional design features such as SmartShield Technology, and in some products, HydraGlyde Moisture Matrix, to help maintain the lens surface throughout the recommended replacement cycle. These technologies complement the lotrafilcon B material rather than replacing it.

The monthly replacement schedule is still an important part of how the lens is designed to perform. Even with advanced materials and surface technologies, reusable lenses should be cleaned, disinfected, and replaced according to your eye doctor's instructions. Extending wear beyond the prescribed replacement schedule can increase the buildup of deposits and reduce the performance of the lens over time.

Yes, but changing from lotrafilcon B to another monthly contact lens material should only be done with your eye doctor's guidance. Monthly silicone hydrogel lenses differ in more than just their material. They also vary in water content, surface treatments, lens geometry, optical design, replacement schedules, and the way they interact with the tear film. A different material may also mean a different lens family with its own fitting characteristics.

Your eye doctor may recommend switching to another monthly lens if your prescription changes, your eyes respond better to a different lens design, or another material is more appropriate for your visual or ocular needs. The decision is based on the overall performance of the finished lens rather than on the material by itself. A new material is typically accompanied by a different optical design, surface technology, or stabilization system.

If you change from lotrafilcon B to another monthly lens material, a new contact lens fitting helps confirm that the replacement lens provides clear vision, an appropriate fit, and healthy wear. Unless your eye doctor recommends a different lens, continue ordering the exact lotrafilcon B contact lens listed on your prescription rather than selecting another monthly lens because it uses a similar silicone hydrogel material.

When reordering lotrafilcon B contact lenses, start by confirming the exact product name on your prescription. The AIR OPTIX family includes lenses for standard vision correction, astigmatism, presbyopia, and cosmetic eye color changes, so selecting the correct product is just as important as entering the right prescription values. Even lenses made from the same material are not interchangeable.

Before placing your order, review these details carefully:

• Product name. Confirm whether your prescription specifies AIR OPTIX Aqua, AIR OPTIX plus HydraGlyde, AIR OPTIX COLORS, or one of their toric or multifocal versions.

• Prescription values. Verify the sphere power and, if applicable, the cylinder, axis, or addition power exactly as written on your prescription.

• Replacement schedule. Make sure the lens matches your prescribed monthly replacement schedule and intended wearing routine.

• Prescription status. Check that your prescription is still valid before ordering another supply.

If your prescription has expired, your vision has changed, or your current lenses no longer provide the same level of comfort or clarity, schedule an eye examination before reordering. Your eye doctor can determine whether you should continue with the same lotrafilcon B lens or whether another contact lens is more appropriate for your current vision and eye health.