02/04/2026
-Keratoconus -
It’s a condition where the cornea gradually thins and bulges forward into a cone shape. That distortion causes irregular astigmatism, glare, ghosting, and progressive blur—often not fully correctable with glasses or soft contacts.
Why scleral lenses are a game-changer
Scleral lenses are large, rigid gas-permeable lenses that rest on the white of the eye (the sclera), not on the cornea itself.
What they do best:
• 🌊 Create a smooth optical surface by vaulting over the irregular cornea
• 👁️ Dramatically improve vision (often 20/20–20/30 even in advanced cases)
• 💧 Trap a fluid reservoir that keeps the eye hydrated and comfortable
• 😌 Increase comfort compared to traditional corneal RGP lenses
Who’s a good candidate?
Scleral lenses are commonly recommended for:
• Mild to advanced keratoconus
• Post-corneal transplant patients
• Highly irregular corneas
• Patients who failed soft or hybrid lenses
• Keratoconus + dry eye (bonus benefit!)
What the fitting process looks like
This is not a “grab-and-go” lens—it’s a customized medical device.
1. Corneal mapping / topography
2. Trial scleral lens fitting (assess vault, landing zone, comfort)
3. Over-refraction for best vision
4. Lens customization & ordering
5. Dispense + insertion/removal training
6. Follow-ups to fine-tune fit and long-term corneal health
Contact our office for more info.
Call/text: (559) 584-1630
www.infinityvisionoptometry.com
Tracey H. Nguyen, OD.