Clinical performance
Measured, not marketed. Our lenses perform highly and outperform comparable lenses in clinical studies—every claim backed by evidence, independent testing and real-world data.
Performance snapshot
The headline metrics behind the comfort.
95%
Comfort rating
Over 95% of trial participants rated comfort “excellent” or “very good”.
ISO
Independently verified
Every performance metric is tested to recognised ISO standards.
100k+
Wearers a year
Trusted in daily practice by wearers and clinicians across the Nordics.
Science before promises
Every Clearlii lens is examined in studies, checked by experts and put through rigorous quality controls before it is packed. From oxygen permeability to tear-film stability, we verify before we claim.
Detailed comfort & safety data
Two evidence packs are available for practitioners and informed wearers.
rated comfort “excellent” or “very good” in multicenter studies.
full compliance across every production batch.
real-world evidence from hundreds of Nordic practices.
"We would rather earn trust with evidence than with marketing—because our customers’ eye health depends on it."
Johan Ek · Head of Clinical Affairs, Clearlii
Trusted in daily practice
Eye-care professionals on prescribing Clearlii with confidence.
"As an optometrist, I recommend Clearlii because the data genuinely backs up the comfort."
Dr Müller
Optometrist · Berlin
"Patient satisfaction noticeably improved across the practice after we switched."
OptikHaus
Optician group · Sweden
"Finally a fairly-priced lens I can stand behind clinically without hesitation."
Dr Lind
Eye clinic · Oslo
Related innovations
Oxygen & health
Why does oxygen matter for my eyes?
The cornea has no blood vessels, so it relies on oxygen from the air. Low oxygen (hypoxia) can cause redness, swelling and long-term complications. Silicone hydrogel ensures optimal oxygen supply, even in thicker lenses for higher prescriptions.
Can I sleep in Clearlii lenses?
Unless specifically prescribed, no. Even with silicone hydrogel, sleeping in lenses reduces oxygen availability and increases infection risk. Always follow your optician's recommendations.