Biotrue ONEday vs. DAILIES TOTAL1
Biotrue ONEday from Bausch and Lomb and DAILIES TOTAL1 from Alcon Inc. are two high-performance contact lenses with a daily replacement modality. Daily disposable lenses have numerous advantages over their weekly or monthly replaceable siblings, most notable are convenience and a reduced risk of eye infection. Both lenses were introduced less than five years ago, which - for contact lenses - means they are both fairly new products. While DAILIES TOTAL1 is a silicone hydrogel based lens, Biotrue's base material is non-silicone based. DAILIES TOTAL1 is known for its ability to let a high level of oxygen through to your eye reducing the risk of hypoxia (an oxygen deficiency that can cause various eye infections). This ability is measured with the Dk/t (oxygen transmission) parameter. DAILIES TOTAL1 shows a value of 156Dk/t and Biotrue ONEday's oxygen transmission was measured with 42Dk/t.
Besides the Dk/t values, let's look at the water content. It appears that Biotrue ONEday outperforms DAILIES TOTAL1 with 77% versus 33%. But, Alcon measures the water content twice. Inside the lens core the water content is 33% but at the surface it gets to above 80%. What's even more important is the ability to retain this moisture throughout the day, and for that, some manufacturers add a wetting agent to the lens material. Looking at our two contestants, DAILIES TOTAL1 embeds phosphatidylcholine(PC) while Biotrue ONEday enjoys the popular polyvinylpyrrolidone (PVP). In addition, Biotrue ONEday provides UV protection (Class 2) and comes with an aspherical lens design. When we checked various online retailers, prices for a single box containing 90 lenses were quite different: $53-$75 for Biotrue ONEday and $80-$100 for DAILIES TOTAL1.
Biotrue ONEday and DAILIES TOTAL1 - Spec Sheets
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