Alcon Air Optix® Night & Day® AQUA 6 Pack is the world's highest-oxygen-transmissibility monthly contact lens — available at contactlens365.com. With Dk/t 175 (the highest of any approved monthly lens), FDA approval for up to 30 nights of continuous wear, and SMARTSHIELD® Technology for deposit resistance, Air Optix® Night & Day® AQUA is the lens of choice for wearers who require, or whose eye care professional has approved, genuine extended or continuous wear. It represents the pinnacle of silicone hydrogel oxygen performance for scheduled lens replacement formats.

The extraordinary Dk/t 175 of Lotrafilcon A — the material behind Air Optix® Night & Day® AQUA — is achieved through an architecture that places oxygen supply as the primary design priority. With only 24% water content (among the lowest in the category), Lotrafilcon A relies almost entirely on silicone-phase oxygen transport rather than water-phase diffusion — silicone has inherently higher oxygen permeability than water, so the reduced water content actually enables the high Dk/t performance. The 24% water content also means the lens dehydrates less than high-water-content alternatives in low-humidity environments, maintaining a more consistent fit and prescription over the wearing cycle.

The clinical significance of Dk/t 175 is its support of corneal physiology during continuous wear periods when the eye cannot access atmospheric oxygen through blinking. During normal blinking wakefulness, the cornea receives approximately 21% atmospheric oxygen. During sleep, the cornea is dependent entirely on the oxygen that can diffuse through the closed eyelid and contact lens — Dk/t 175 is engineered to support this requirement. It is important to note that continuous wear approval does not mean continuous wear is appropriate for all wearers — your eye care professional must evaluate individual suitability, tear film quality, and corneal health before approving any extended wear schedule. With regular professional monitoring, however, Air Optix® Night & Day® AQUA provides the oxygen performance that clinicians require for responsible extended wear prescribing.

Technical Specifications

Key Technologies

Who Is It For?

How to Use & Care

• 1Wash hands with soap and water. Dry with a lint-free towel.
• 2Inspect for tears or deformation. Confirm bowl orientation. Never insert damaged/inside-out lens.
• 3Insert gently onto cornea. Blink to settle.
• 4Clean after every removal — rub each surface with multipurpose solution ≥5 seconds per side, rinse thoroughly.
• 5Store in fresh solution — always empty and refill case completely. Never top up old solution.
• 6Replace case every 1–3 months. Rinse daily with solution, wipe, air dry face-down.
• 7Replace on schedule — note opening date. Never extend wear beyond the replacement period.
• 8Remove before sleep unless eye doctor approved. Never swim or shower in lenses.

Frequently Asked Questions

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This product page is prepared by contactlens365.com. Alcon, Air Optix, Night & Day, and SMARTSHIELD are trademarks of Alcon Inc. or its affiliates. Always consult a qualified eye care professional before using contact lenses.