Keratoconus
A progressive disease in which the cornea thins and bulges outward into a cone. Because the surface is no longer round, glasses can only do so much.
- Blurry or distorted vision
- Light sensitivity
- Prescription keeps changing
- Hard to drive at night
- Double vision
How the lens helps — it replaces the cone with a smooth optical surface, which is why keratoconus patients often see the biggest jump in clarity.
High astigmatism
The cornea is shaped more like a football than a basketball. Common, but past a certain point, glasses and soft lenses stop reaching 20/20.
- Never quite sharp
- Eye strain and headaches
- Halos around lights
- Double vision
How the lens helps — the saline layer neutralizes the irregular shape entirely, correcting amounts of astigmatism a soft lens can't hold.
Dry eye disease
There aren't enough tears — or the right kind of tears — to keep the surface of the eye comfortable through the day.
- Burning
- Grittiness
- Redness
- Something-in-my-eye feeling
- Vision that clears when you blink
How the lens helps — the reservoir keeps the cornea in constant contact with fluid. Especially effective in moderate to severe cases.
Post-surgical corneas
After LASIK, PRK, RK or a corneal transplant, the surface can heal into a shape that no longer focuses light evenly.
- Glare and starbursts
- Vision worse at night
- Regression after surgery
- Graft irregularity
How the lens helps — it vaults the whole healed surface, giving stable vision without putting pressure on a graft or a treated zone.