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We offer a 365-day return policy for all new, unused, and unopened products. If you are not completely satisfied with your purchase, you may return the item within 365 days of delivery to receive a full refund.
In cases where the return is due to an error on our part—such as receiving an incorrect or defective item— we will also cover the return shipping costs.
Once your return has been handed over to the return carrier, you can expect your refund to be processed within four weeks, although it may often be completed sooner. The estimated timeline includes:
To initiate a return, please contact our customer service team by phone at +44 7426 501445 or via email at help@contactlens365.com. You will receive an email confirmation once your return has been received and processed.
Alcon's continuous wear monthly lens — Dk/t 175, the highest oxygen transmissibility in a monthly contact lens, FDA-approved for up to 30 nights of continuous wear.
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.
🫁 Dk/t 175 — the highest oxygen transmissibility of any monthly contact lens. FDA-approved for up to 30 nights continuous wear when prescribed. The material of choice for eye care professionals who need the maximum oxygen performance for approved extended wear patients.
| Parameter | Value |
|---|---|
| Material | Lotrafilcon A (Silicone Hydrogel) |
| Water Content | 24% |
| Base Curve (BC) | 8.4 mm and 8.6 mm |
| Diameter | 13.8 mm |
| Oxygen Transmissibility (Dk/t) | 175 |
| UV Protection | None |
| Power Range (SPH) | –10.00 to +6.00 D |
| Replacement Schedule | Monthly / Up to 30 nights continuous |
| Pack Contents | 6 Lenses |
| Manufacturer | Alcon |
⚠️ IMPORTANT: Continuous wear suitability must be determined by your eye care professional on an individual basis. Never sleep in contact lenses without an explicit professional recommendation and ongoing regular monitoring. Air Optix® Night & Day® AQUA is available to prescribe for continuous wear — it does not replace professional assessment of individual suitability.
After each use, rub both surfaces with multipurpose solution ≥5 seconds per side, rinse, store in fresh solution. Never use tap water or saliva.
Order directly at contactlens365.com with competitive pricing, secure payment, and fast shipping.
A 6-lens box covers ~3 months for one eye (one lens per one month). Two boxes provide a full 3-month bilateral supply.
No. Remove before swimming, showering, or using a hot tub. Water contact raises serious infection risk.
Unless your eye doctor has specifically approved overnight wear, do not sleep in contact lenses.
Visit the product page at contactlens365.com for the latest pricing and promotions.
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.
| Manufacturer | Alcon |
|---|---|
| DIA: | 13.80 |
| BC: | 8.60-8.40 |
| Pack Size:? | 6 lenses |
| Expiration: ? | 18 months and more |
| Oxygen permeability: ? | 175 Dk/t |
| Replacement schedule: ? | 30 Days |
| Water content: ? | 24% |
| Product name: | Air Optix Night and Day Aqua |
| Power range: ? | from -10.00 to +6.00 |
| Lenses Material: | Lotrafilcon A |
| Extended or overnight wear: ? | Yes |
| UV filter: ? | No |
| Medical Device: | Yes |
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