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Understanding keratoconus

Your cornea is changing shape. Here's what that means.

Keratoconus is a progressive condition where the normally round cornea thins and bulges into a cone shape, distorting vision. Modern treatments can stop progression โ€” and often sharpen vision.

Cornea bulging into cone
Cornea shape change Normal dome Cone shape Thinning + bulging distorts vision

From dome to cone.

Your cornea is the clear dome at the front of your eye โ€” it does most of the focusing work. In keratoconus, it gradually thins and bulges outward, creating an irregular shape that scatters light.

This usually starts in teens or twenties and can progress for years before stabilizing. The earlier we catch it, the better we can preserve โ€” or even improve โ€” your vision.

Progression

How keratoconus changes
over time.

Stage 01
Normal cornea
Smooth, round dome
Stage 02
Early
Slight irregularity
Stage 03
Moderate
Visible cone shape
Stage 04
Advanced
Significant bulging

Here's the plan โ€”
and why it works.

Foundation

Stop eye rubbing

Seriously. Eye rubbing is the #1 modifiable risk factor for progression.

Halts progression

Corneal crosslinking

Strengthens the cornea with riboflavin and UV. A 1-hour in-office procedure.

Sharper vision

Scleral contact lenses

Custom lenses that vault over the cornea, creating a perfectly smooth optical surface.

Advanced cases

Intacs or transplant

Tiny ring segments or, rarely, corneal transplant for severe scarring.

Protect your corneas

Never rub your eyes hard โ€” even when itchy. Treat allergies aggressively. Sleep on your back if you can, and keep up with your crosslinking follow-ups.

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Common questions

Honest answers to common questions.

Will I go blind?+

No. Keratoconus almost never causes blindness. Even in severe cases, specialty contact lenses or corneal transplant restore functional vision.

What is crosslinking?+

A procedure that strengthens corneal collagen using riboflavin and UV light. It stops progression in over 95% of cases. It's the most important treatment for keratoconus today.

Do I need a corneal transplant?+

Less than 10% of keratoconus patients ever need one. Most do well with glasses, scleral lenses, or crosslinking. Transplant is reserved for advanced cases with scarring.

Can I still wear soft contacts?+

In early keratoconus, yes. As it progresses, you'll likely need specialty lenses โ€” rigid gas permeable, hybrid, or scleral lenses that vault over the irregular cornea.

Does rubbing my eyes really matter?+

A lot. Eye rubbing mechanically deforms the cornea and is strongly linked to keratoconus progression. If you have allergies, treat them aggressively to reduce the urge to rub.

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