An uneven surface.
A smoother window.

The clear front surface

The eye’s clear
front window.

The cornea helps focus incoming light.

Enlarged · front surface of the eye

A closer look
at the cornea.

Clear scleral lensSaline reservoirCorneal tissueWhite of the eye

Colors, section and light paths simplified for teaching.

With the lens on

A clearer view.

Illustrative vision example. Individual results vary.

The cornea

01 / A smooth window

The cornea is the eye’s clear front window. A smooth surface helps bring light into focus.

Play sequenceAnimation timeline in seconds

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Replay

Explore the lens and fluidCompare the same cornea with and without the lens.

Without lensWith lens

The lens is worn during the day. Your doctor checks the clearance, landing and vision, and teaches you the filling and cleaning routine.