Technology · Silicone hydrogel

Silicone hydrogel

Breathable comfort, all-day eye health. The silicone-hydrogel material increases oxygen supply to the eye, helping keep your eyes clear, white and comfortable through extended wear.

Oxygen flowing through the silicone-hydrogel lens to the eye
Key benefits

All-day eye health & comfort

Why the material matters.

01

Up to 5× more oxygen

Silicone channels carry far more oxygen to the cornea than traditional hydrogel.

02

Healthier corneas

Better oxygen flow reduces redness and supports long-term corneal health.

03

Clear, white eyes all day

Well-oxygenated eyes stay bright and comfortable, even during long wear.

Silicone Hydrogel detail
Material science deep dive

Beyond oxygen: the breakthrough

For decades, the challenge was balancing hydration with oxygen flow. Silicone is naturally highly permeable to oxygen; combined with water-loving hydrogel, it delivers oxygen while staying hydrated and comfortable.

01Oxygen-permeable silicone channels
02Water-loving hydrogel for hydration
03High oxygen transmission to the cornea
Clinical data highlights

The evidence

Oxygen performance verified by independent laboratories.

More oxygen to the cornea vs. traditional hydrogel materials.

High Dk/t

High oxygen transmissibility on silicone-hydrogel lenses.

ISO

Performance verified to recognised ISO standards.

Download the Silicone Hydrogel study (PDF)
SB

"Oxygen is everything for corneal health. Silicone hydrogel lets the eye breathe—so comfort and long-term health go hand in hand."

Sofia Berg · Head of Product & Science, Clearlii
Wearer testimonials

Eyes that breathe all day

Wearers on whiter, fresher eyes through the longest days.

"My eyes stay white and fresh even after a fourteen-hour shift on the ward."
EL

Erik L.

Göteborg

"I can wear them comfortably far longer than my old lenses — no late-afternoon fog."
JN

Johanna N.

Stockholm

"My optician recommended the switch for eye health, and I can genuinely feel the difference."
MT

Markus T.

Aarhus

Let your eyes breathe

Discover silicone-hydrogel comfort—find Clearlii at a pharmacy or optician near you, or talk to our team.