ACUVUE OASYS and Biofinity are two of the most recognized reusable contact lens brands, so it makes sense to pause and think a little longer before picking one. You’re not just choosing a name. You’re choosing how often you replace lenses and what your routine looks like day to day.
The real question is what you want life to feel like in these lenses. Do you want a replacement schedule you barely have to think about, or do you want a fresher lens swap more often? Do you care about UV blocking being listed on the lens, or is that not part of your decision?
Let’s line them up and make the decision easier.
About The Lenses
What Is Acuvue Oasys?
ACUVUE OASYS is a 2-week silicone hydrogel contact lens made with senofilcon A. It has HYDRACLEAR® PLUS Technology and Class 1 UV blocking, which means it’s built for comfortable daily wear with UV protection
What Is Biofinity?
Biofinity is a monthly silicone hydrogel contact lens made with comfilcon A. It has Aquaform® Technology, which means it’s designed to hold water within the lens material for comfortable wear, and it’s also approved for extended wear up to 6 nights and 7 days for appropriate patients.
What’s The Difference Between Acuvue Oasys and Biofinity?
Both are silicone hydrogel lenses, but they are not built the same. The differences show up in material, water content, UV blocking, and replacement timing.
Comfort and Hydration
Comfort is personal, but these numbers help you compare what each lens is made of and how it’s built.
| Feature | ACUVUE OASYS (2-Week) | Biofinity (Monthly) |
|---|---|---|
| Material | Senofilcon A silicone hydrogel | Comfilcon A silicone hydrogel |
| Water Content | 38% | 48% |
| Oxygen Transmissibility (Dk/t) | 147 (edge-corrected) at -3.00D | Approved for extended wear up to 6 nights/7 days is listed in the package insert |
| Design Focus Listed | HYDRACLEAR® PLUS Technology | Aquaform® Technology |
| Replacement Schedule | 2-week | Monthly |
Water content alone does not tell you how a lens will feel on your eyes. The fit, your tear film, and how consistently you clean lenses can change the experience a lot.
Vision Clarity
| Feature | ACUVUE OASYS (2-Week) | Biofinity (Monthly) |
|---|---|---|
| Base Curve Options | 8.4 mm, 8.8 mm | (Listed on Biofinity materials; base curve is typically specified by region and product spec sheet) |
| Diameter | 14.0 mm | (Diameter is specified by region and product spec sheet) |
| Center Thickness (@ -3.00D) | 0.070 mm | Not shown on the Biofinity pages pulled above |
If one looks “clearer” than the other for you, it usually comes down to fit and how stable the lens is on-eye. Specs help, but your prescriber’s fit check is what settles it.
UV Protection
| Feature | ACUVUE OASYS (2-Week) | Biofinity (Monthly) |
|---|---|---|
| UV Blocking | Class 1 UV blocker, >96% UVA and >99% UVB | UV blocking is not listed in the Biofinity sources used above |
Contact lenses with UV blocking still do not replace sunglasses. Contacts do not cover the whole eye area.
Price and Value
Prices on VisionPros shift with promos and pack size, so it helps to think in broad ranges instead of exact numbers.
| Feature | ACUVUE OASYS (2-Week) | Biofinity (Monthly) |
|---|---|---|
| Typical Price Range on VisionPros | Roughly $120 to $200 per box (varies by pack size and promos). | Roughly $50 to $80 per box (varies by pack size and promos). |
| Replacement Timing | New lens every 2 weeks | New lens every month |
| What Drives Total Spend | More frequent lens replacement, plus solution | Fewer lenses per year, plus solution |
| What You’re Paying For | UV blocking is listed | Monthly schedule + extended wear approval up to 6 nights/7 days for appropriate patients |
If you’re trying to keep annual spend down, the monthly schedule often makes Biofinity easier to budget for, while ACUVUE OASYS tends to land higher mainly because you replace lenses more often.
User Feedback
| Source | ACUVUE OASYS (2-Week) | Biofinity (Monthly) |
|---|---|---|
| VisionPros reviews | Mentions of “reliable” wear and clear vision. A couple reviews also mention dryness by the end of the day. | Biofinity page copy leans into consistent comfort and clear vision from day 1 to day 30 (product write-up, separate from reviews). |
| Reddit r/contacts thread | In a direct comparison thread, one commenter didn’t like OASYS and described noticing the lens edge and distorted peripheral vision. | In the same thread, one commenter preferred Biofinity and mentioned crisp vision, while also noting it can dry out and get uncomfortable at times. |
| Reddit r/contacts thread | A few posts about OASYS vs Biofinity focus on fit feel and personal comfort rather than “one is objectively better.” | Another thread includes complaints about Biofinity feeling scratchy and drying out quickly for that wearer. |
| Trustpilot product page | (Not a VisionPros source.) Biofinity product reviews on Vision Direct IE highlight comfort, quality, and value for money. | Biofinity product reviews on Feel Good Contacts IE also skew strongly positive, with highlights around quality and value for money. |
Which Lens Should You Choose?
Pick ACUVUE OASYS if you’re the type who wants to reset your lenses more often. Two weeks is a shorter runway, so if your lenses tend to feel “not as nice” toward the end, that schedule can be easier to live with.
It’s also the obvious pick if UV blocking being listed matters to you.
Pick Biofinity if you want fewer replacement days to track. Monthly lenses can feel simpler when your nightly cleaning routine is consistent.
And if you’re asking your eye doctor about sleeping in lenses, Biofinity has extended-wear approval listed for up to 6 nights and 7 days for appropriate patients.
If you’re still not sure which pair of contact lenses is the best for you, you can always try our lens finder quiz so you know where to start.
If you ever want to swap brands,
We’ve got a wide selection of discounted contact lenses you can choose from!
And remember, always double-check your exact prescription details and follow your eye doctor’s guidance for trying a new lens safely.
Frequently Asked Questions
1. What is the main difference between ACUVUE OASYS and Biofinity?
ACUVUE OASYS is a 2-week senofilcon A silicone hydrogel lens that lists Class 1 UV blocking. Biofinity is a monthly comfilcon A silicone hydrogel lens, and its documentation also includes approval for extended wear up to 6 nights and 7 days for appropriate patients.
2. Can you sleep in ACUVUE OASYS or Biofinity?
Biofinity’s package insert states it has been approved for extended wear up to 6 nights and 7 days. Overnight wear is still a prescriber decision, since not everyone is a candidate.
3. Do these lenses fit the same?
ACUVUE OASYS lists a 14.0 mm diameter and base curves of 8.4 mm and 8.8 mm. Biofinity fit parameters depend on the specific Biofinity information for your region and exact product version.
4. Which one is better for sun protection?
ACUVUE OASYS lists Class 1 UV blocking (>96% UVA and >99% UVB). Biofinity does not list UV blocking. Sunglasses still matter either way.
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