Still Seeing Glare, Halos, or Ghosting With Scleral Lenses? Here's Why.
Still struggling with glare, halos, ghosting, or poor night vision – even with scleral lenses?
Many keratoconus patients can read 20/20 on an eye chart and still feel like their vision is wrong. In bright light, at night, or when looking at screens, they see halos, starbursts, ghosting, and glare that no prescription seems to fix. They’ve been told their lenses fit correctly. They’ve been told their vision is “as good as it gets.”
It often isn’t. And the reason is almost always higher-order aberrations, a layer of optical distortion that standard scleral lenses are not designed to correct.
At Keratoconus Specialists of Maryland, Dr. Benjamin Azman, OD, uses wavefront aberrometry to identify exactly what is causing your remaining symptoms and designs a custom lens to correct them specifically.
What Are Higher-Order Aberrations (HOAs)?
Higher-order aberrations (HOAs) are complex optical distortions, beyond simple nearsightedness or astigmatism, that affect how your eye processes light. In keratoconus, the irregular corneal shape produces significant HOAs that cause:
- Glare and halos around lights
- Starbursts — especially at night
- Ghosting or double vision in one eye
- Poor night vision and difficulty driving after dark
- Reduced contrast and clarity — even at 20/20
Standard glasses and contact lenses correct basic focus but do not measure or address HOAs. This is why a patient can read the eye chart and still feel like their vision is poor in real-world conditions.
Why Standard Scleral Lenses May Not Be Enough
Scleral lenses are one of the most effective treatments for keratoconus, and many patients do very well with them. Standard scleral lenses vault the irregular cornea and create a smooth optical surface, correcting the basic distortion caused by the cone shape.
But they stop there.
This is not a failure of the lens fitting. It is a limitation of standard lens design. Addressing it requires a different technology: wavefront aberrometry.
How Wavefront Scleral Lenses Correct HOAs
Wavefront aberrometry measures how light travels through your entire optical system, cornea, lens, and vitreous, and produces a detailed map of every distortion present. Dr. Azman uses this data to design a scleral lens with optical corrections built in specifically for your eye’s HOA profile.
The result is a lens that corrects not just what the eye chart measures, but what you actually experience in daily life:
- Reduced glare, halos, and starbursts
- Improved night vision and driving confidence
- Less ghosting and double vision
- Better contrast and clarity in all lighting conditions
- More comfortable vision during extended wear
For patients who have struggled for years with visual symptoms that no other provider could explain or fix, wavefront scleral lenses are often the answer that was missing.
Who Is a Good Candidate for Wavefront Scleral Lenses?
Wavefront scleral lenses are specifically indicated for patients who:
- Are already wearing scleral lenses but still experiencing glare, halos, ghosting, or poor night vision
- Can see 20/20 on the eye chart but feel their real-world vision is poor
- Have been told their vision is “as good as it gets” — and don’t accept that
- Have keratoconus with significant visual distortions beyond basic blur
- Are considering more invasive options but want to explore advanced lens solutions first
Not every keratoconus patient requires wavefront correction. Many achieve excellent results with standard custom scleral lenses. Dr. Azman uses wavefront aberrometry and diagnostic testing to determine whether HOA correction is likely to produce a meaningful improvement for each individual patient.
Advanced Customization - Combining Technologies
For the most complex cases, wavefront correction can be layered with other advanced scleral lens technologies to address both optical distortions and fit complexity simultaneously:
- Scan-based scleral lenses — 3D corneo-scleral topography used to precisely map the landing zone of the lens for patients with irregular scleral geometry
- Impression-based scleral lenses (EyePrintPro) — a physical impression of the eye’s surface used to create a perfectly matched lens for patients with the most irregular corneas
This layered approach is reserved for the most difficult cases — patients who have failed multiple previous fittings and require both optical and geometric customization to achieve satisfactory results.
Our Approach - Why Patients Come to Us
Most eye care practices do not offer wavefront-guided scleral lens fittings. It requires specific diagnostic equipment, clinical expertise in HOA interpretation, and experience designing lenses that incorporate wavefront corrections accurately.
At Keratoconus Specialists of Maryland, wavefront aberrometry and HOA-correcting lens design are a core part of how Dr. Azman approaches complex keratoconus cases, not an occasional add-on. The practice focuses exclusively on keratoconus, and Dr. Azman sees complex cases all day, every day.
He is known among colleagues as a “doctor’s doctor” – optometrists and ophthalmologists throughout Maryland and surrounding states refer their most difficult HOA cases to him, including patients who have already failed at multiple other practices.
Frequently Asked Questions — Wavefront Scleral Lenses
What are wavefront scleral lenses and how are they different from regular scleral lenses?
Standard scleral lenses improve vision by vaulting the irregular cornea and creating a smooth optical surface — but they do not correct higher-order aberrations (HOAs). Wavefront scleral lenses go further by using aberrometry measurements to identify the specific optical distortions in your visual system and customizing the lens to correct them. The result is improved visual quality beyond what the eye chart measures — less glare, fewer halos, reduced ghosting, and better night vision.
Why do I still have glare, halos, or poor night vision even with scleral lenses?
If you are still experiencing glare, halos, ghosting, starbursts, or poor night vision with scleral lenses, the cause is almost certainly residual higher-order aberrations (HOAs). Standard scleral lenses correct the basic shape of the cornea but are not designed to address HOAs. These distortions require wavefront aberrometry to measure and a custom wavefront-guided lens design to correct. At Keratoconus Specialists of Maryland, Dr. Benjamin Azman uses wavefront analysis to identify exactly what is causing your remaining symptoms and designs a lens specifically to address them.
Why do I see 20/20 on the eye chart but still feel like my vision is poor?
The 20/20 line measures basic resolution — your ability to distinguish letter shapes at a standard distance. It does not measure visual quality, contrast sensitivity, or how your eye handles light. Higher-order aberrations affect these dimensions of vision, which is why patients can read the chart but still experience glare, halos, ghosting, and difficulty in real-world conditions like driving at night or in bright light. Wavefront scleral lenses are designed to address this gap.
Who is a good candidate for wavefront scleral lenses?
Wavefront scleral lenses are the right next step for keratoconus patients who are already wearing scleral lenses but still experiencing glare, halos, ghosting, or poor night vision; have been told their vision is ‘as good as it gets’ but are not satisfied; or have complex HOAs identified on aberrometry that standard lenses have not resolved. Not every keratoconus patient needs wavefront correction — Dr. Azman uses diagnostic testing to determine which patients are likely to benefit.
Do all keratoconus patients need wavefront scleral lenses?
No. Many keratoconus patients achieve excellent vision with standard or custom scleral lenses and do not require wavefront correction. Wavefront scleral lenses are specifically recommended for patients with significant residual higher-order aberrations (HOAs) or persistent visual quality symptoms — glare, halos, ghosting, poor contrast — that are not resolved with standard scleral lens wear.
Can wavefront correction be combined with other advanced scleral lens technologies?
Yes. For patients with both complex HOAs and highly irregular corneal or scleral geometry, wavefront correction can be incorporated into scan-based scleral lenses or impression-based scleral lenses such as EyePrintPro. This layered approach addresses both optical distortions and fit complexity simultaneously, and is typically reserved for the most challenging cases.
What makes Keratoconus Specialists of Maryland different for wavefront scleral lens fittings?
Most eye care practices do not offer wavefront-guided scleral lens fittings at all. At Keratoconus Specialists of Maryland, wavefront aberrometry and HOA-correcting lens design are a core part of how Dr. Benjamin Azman approaches complex keratoconus cases. The practice focuses exclusively on keratoconus — not general eye care — and Dr. Azman is known among colleagues as a doctor’s doctor, receiving referrals of the most difficult HOA cases from optometrists and ophthalmologists throughout Maryland and surrounding states.