For people whose eyes do not get along with ordinary contact lenses — those with keratoconus, irregular corneas, or stubborn dry eye — scleral lenses can feel like a revelation. These large, specialised lenses often deliver crisp, comfortable vision where nothing else worked. But they are not perfect, and they are not for everyone.
This guide from Visual Aids Centre gives you an honest, balanced look at the advantages and disadvantages of scleral lenses — what makes them remarkable, where they fall short, and who tends to benefit most — so you can decide whether they are worth exploring for your eyes.
Key Takeaways
- Scleral lenses vault over the cornea and rest on the white of the eye, creating a smooth optical surface.
- Their biggest advantages are sharp vision for irregular corneas and all-day relief for severe dry eye.
- They are often surprisingly comfortable despite being rigid, because they avoid the sensitive cornea.
- The main drawbacks are higher cost, a handling learning curve, and more maintenance.
- They require expert fitting, so a specialist assessment is essential.
What Are Scleral Lenses?
Scleral lenses are large rigid gas-permeable lenses that are wider than a standard contact lens. Instead of sitting on the cornea, they arch right over it and rest gently on the sclera — the white of your eye. The space between the lens and the cornea fills with a reservoir of saline, which bathes the eye all day and creates a perfectly smooth optical surface.
That design is the secret to everything they do well. If you want the fundamentals first, our explainer on what scleral lenses are covers the basics, and our guide on whether they are hard or soft clears up a common confusion.
The Advantages of Scleral Lenses
The benefits are genuinely impressive for the right eyes.
Outstanding Vision for Irregular Corneas
This is their standout strength. By replacing an irregular corneal surface with a smooth one, scleral lenses can deliver sharp vision that glasses and ordinary lenses simply cannot — which is why they transform sight for many with keratoconus or scarring, as our guide on how scleral lenses improve vision in irregular corneas explains.
Exceptional Comfort and Dry-Eye Relief
Despite being rigid, they are often very comfortable, because they rest on the less-sensitive sclera rather than the cornea. The fluid reservoir also keeps the eye continuously moist, making them a powerful option for severe dry eye.
Stability and Durability
They sit securely without shifting, giving steady vision even during activity — and they last well with care. Our comparison of scleral versus traditional contact lenses and our note on how long they last show how they hold up.
The Disadvantages of Scleral Lenses
Honesty matters, so here are the genuine trade-offs.
Higher Cost
Scleral lenses are custom-made and require expert fitting, so they cost more than standard lenses — and coverage varies, as our guide on what insurance covers outlines.
A Handling Learning Curve
Inserting and removing them takes practice, often using a small plunger and filling the lens with saline first. It feels fiddly at the start — our guides on inserting and removing them and even removing them without a plunger make the learning curve far gentler.
More Maintenance
They need careful daily cleaning and the right solutions to stay safe and clear. Our tips on cleaning scleral lenses and which eye drops to use with them help keep the routine simple.
Who Are They Best For?
Scleral lenses are not usually a first choice for a simple prescription — they shine for specific needs:
- Keratoconus and irregular corneas, where they restore vision others cannot.
- Severe or chronic dry eye, thanks to their constant fluid reservoir.
- Post-surgical or post-transplant corneas that are hard to fit.
- People who cannot tolerate other rigid lenses but need their optical quality.
Are They Worth It?
For the people who need them, scleral lenses are often life-changing — the comfort and clarity easily outweigh the cost and handling once you adapt. For someone with a simple prescription, the extra expense and routine may not be justified when easier options exist.
Conclusion
Scleral lenses are a remarkable option with a clear trade-off. On the plus side: outstanding vision for irregular corneas, genuine comfort, and unmatched relief for severe dry eye. On the minus side: higher cost, a handling learning curve, and more daily maintenance. They are not for every eye — but for keratoconus, irregular corneas, and chronic dryness, the advantages frequently outweigh the drawbacks by a wide margin.
Wondering if scleral lenses are right for your eyes? Book a consultation with Visual Aids Centre and our specialists will assess your eyes and fit you with the option that gives you the clearest, most comfortable vision.
Frequently Asked Questions (FAQs)
What are the main advantages of scleral lenses?
Sharp vision for irregular corneas, exceptional comfort despite being rigid, and all-day relief for severe dry eye thanks to their built-in fluid reservoir.
What are the disadvantages of scleral lenses?
They cost more, take practice to insert and remove, and need careful daily maintenance. They also require expert fitting by a specialist.
Are scleral lenses comfortable to wear?
Surprisingly, yes. Because they rest on the less-sensitive white of the eye rather than the cornea, many people find them more comfortable than smaller rigid lenses.
Who should consider scleral lenses?
People with keratoconus, irregular or post-surgical corneas, or severe dry eye, and anyone who cannot tolerate other rigid lenses but needs their optical clarity.
Are scleral lenses hard to put in?
There is a learning curve, usually involving a small plunger and filling the lens with saline. Most people become confident with a little practice.
Are scleral lenses worth the cost?
For irregular corneas or severe dry eye, usually yes — the vision and comfort justify it. For a simple prescription, easier and cheaper options often suffice.
