If you’ve been fit with scleral lenses for keratoconus but are still struggling with your vision — glare at night, ghosting on text, lenses that cloud over, or a general sense that things should be clearer — you’re not imagining it.
Scleral lenses are an excellent foundation. But “scleral lens” is a broad category, and not all designs are built to address the full complexity of keratoconus. In many cases, persistent symptoms are not a sign that your keratoconus is untreatable. They’re a sign that the lens technology hasn’t caught up to the problem.
Here are 12 signs that your scleral lenses may not be working — and what a more advanced evaluation can do about it.
12 Signs Your Scleral Lenses Aren't Working
1. You still see halos, starbursts, or glare around lights at night
Night driving, streetlights, oncoming headlights — these are classic symptoms of uncorrected higher-order aberrations (HOAs). Standard scleral lenses vault the cornea and improve comfort, but most designs do not correct the optical scatter caused by HOAs such as coma, trefoil, and spherical aberration. If nighttime glare is still limiting your life, your lens likely lacks wavefront-guided HOA correction.
What’s happening: HOAs scatter incoming light in ways that glasses and standard lenses cannot fix. Wavefront aberrometry maps these distortions precisely, allowing custom lens designs to target them directly.
2. You have “ghosting” — a second or third image overlapping the first
Ghosting, also called monocular diplopia, is one of the most frustrating symptoms of unmanaged keratoconus. Text looks doubled, faces blur at the edges, screens become nearly unreadable. Like halos and glare, ghosting is rooted in HOAs that standard scleral lens optics were not designed to address. Many patients who visit us after years of ghosting have never had a full wavefront aberration analysis performed.
3. Your lenses feel comfortable at insertion but cloud over or dry out within a few hours
A properly fit scleral lens maintains a fluid reservoir over the cornea that should remain stable throughout the day. If your vision degrades after a few hours, the lens may be landing incorrectly on the conjunctiva — allowing debris or mucus to migrate underneath. This is a fitting problem, not a symptom to simply endure.
4. The lens moves, shifts, or becomes uncomfortable by midday
Scleral lenses should provide stable, all-day comfort. Significant movement or increasing end-of-day discomfort typically indicates the lens isn’t properly matched to your scleral topography. Modern scan-based or impression-based fitting methods — including EyePrintPro — can map the exact geometry of your eye’s surface to create a lens that stays precisely in place.
Still experiencing these symptoms? Dr. Benjamin Azman offers a free consultation and complimentary record review for keratoconus patients — including those who have already tried scleral lenses elsewhere. Schedule your consultation today.
5. You were told your keratoconus is “too advanced” for lenses to help
This is one of the most common things patients tell us before finding lasting solutions here. Advanced keratoconus is genuinely difficult to fit — but difficult and impossible are not the same. EyePrintPro, PROSE, and wavefront-corrected scleral lenses are specifically designed for cases that standard lens designs cannot accommodate. Many of our patients travel from across the country after being told nothing more could be done.
6. Your distance vision is decent, but reading and intermediate distances remain blurry
When HOAs are present, visual distortion is often distance-dependent — different spatial frequencies are affected at different ranges. Patients sometimes achieve acceptable distance acuity but still struggle with a computer screen or a menu. A wavefront-driven lens design accounts for the full aberration profile, not just gross correction for distance.
7. You’ve never had a wavefront or HOA aberration analysis
If you’ve been fit with sclerals at a general optometry practice or a corneal specialty center, ask yourself: was a full wavefront or HOA analysis performed before your lenses were ordered? Without aberrometry data, the lens is designed around corneal shape — not the actual optical distortions affecting your vision. At Keratoconus Specialists of Maryland, Dr. Benjamin Azman uses Pentacam imaging, OCT, and wavefront aberrometry together before any advanced lens is designed. This is what separates a truly custom lens from a generic scleral.
8. Your lenses were prescribed by a general OD or ophthalmologist — not a keratoconus specialist
General eye care providers see keratoconus relatively infrequently. Even well-intentioned practitioners may not have access to the full range of lens platforms — wavefront-guided sclerals, PROSE, EyePrintPro, impression-based designs — that exist for complex cases. A specialist who sees keratoconus exclusively will have a broader toolkit and deeper fitting experience. Dr. Azman regularly receives referrals from other ODs and ophthalmologists throughout Maryland and surrounding states — often described as a “doctor’s doctor” for the most challenging keratoconus cases.
9. Insertion is difficult, or you’ve never been properly coached on technique
Scleral lenses require a different insertion and removal method than soft lenses, and technique matters for both comfort and optical performance. A lens filled incorrectly or inserted with an air bubble will produce distorted vision. If you were sent home with instructions and left to figure it out, you may never have experienced what your lenses can actually deliver when inserted correctly.
10. You have corneal scarring and haven’t been evaluated by a cornea specialist
Advanced keratoconus can result in corneal scarring that may limit visual potential regardless of lens design. A fellowship-trained cornea specialist can evaluate the degree of scarring and assess whether medical intervention could improve outcomes before or alongside lens fitting. Keratoconus Specialists of Maryland has Dr. Richard Adler, MD, FACS on-site — a cornea specialist with fellowship training from the Johns Hopkins Wilmer Eye Institute — available for integrated evaluation when clinically appropriate.
11. Your vision fluctuates significantly from day to day or hour to hour
Some variation over a long day of wear is normal. Dramatic day-to-day fluctuation may point to a fitting instability, lens design issues, or a cornea that is still changing. Corneal topography mapping over time can clarify whether this is a fitting problem or an indicator of ongoing progression that warrants further evaluation.
12. You’ve tried multiple providers and been told to “just live with it”
This is the most important sign of all. Keratoconus is treatable. The lens technology available today — wavefront scleral lenses, PROSE, EyePrintPro, impression-based designs — has produced dramatic improvements in visual outcomes even for the most irregular corneas. If you’ve been told your options are exhausted, you may simply not have been seen by someone with the full range of tools and the specific expertise to use them. The patients who find their way to our practice frequently report that we were the first provider who really understood what they were experiencing.
What to Do If You Recognize These Signs
If several of these signs describe your experience, the next step is a specialist evaluation focused specifically on keratoconus — one that includes wavefront aberrometry, corneal topography, and a full review of your lens history and current visual challenges.
At Keratoconus Specialists of Maryland, we begin with a complimentary doctor phone consultation and record review. During this call:
- Your records and imaging are reviewed
- Your specific visual symptoms are discussed
- We determine whether advanced wavefront or impression-based options are appropriate for your case
- You decide whether an in-person visit makes sense for you
Many of our patients travel from across Maryland, Virginia, Pennsylvania, Delaware, Washington D.C., and throughout the United States. The free consultation is designed to help you determine whether advanced technology makes that travel worthwhile — before you commit to anything.
Your keratoconus may not be too complex. Your lens technology may just need to catch up.