Scleral Lenses After Refractive Surgery
When Refractive Surgery Leaves Vision Problems Behind
Most people see very well after refractive surgery, but a small percentage develop complications that change the surface of the cornea in ways that standard optical corrections simply cannot address. Understanding what went wrong in your eye is the first step toward finding the right solution.
LASIK and PRK reshape the cornea by removing tissue with a laser. When the healing process is uneven, or when too much tissue is removed from a cornea that was not a strong candidate for surgery, the corneal surface can develop irregular areas. These irregularities scatter light instead of focusing it cleanly onto the retina.
Post-LASIK ectasia (ih-KTA Y-zhuh) is a condition where the cornea begins to thin and bulge progressively after surgery. It is one of the more serious complications and requires prompt evaluation. Uneven laser ablation zones can also leave behind irregular astigmatism, which causes halos, ghosting, and monocular double vision that no glasses prescription can fully correct.
Radial keratotomy, or RK, was a surgical procedure performed before LASIK became the standard approach. It involved making small radial cuts in the cornea to flatten its shape and reduce nearsightedness.
Over the years, those incisions can weaken the cornea and cause it to continue flattening. Many RK patients notice that their vision fluctuates throughout the day, is clearest in the morning, and blurs as the day progresses. This instability is caused by the incisions opening and closing slightly as eye pressure naturally shifts during waking hours. Irregular astigmatism from RK often worsens with age.
Glasses are designed to correct predictable, regular refractive errors. When the corneal surface is irregular, a glasses prescription can only approximate a correction and will not eliminate the distortion caused by surface irregularities.
Soft contact lenses are flexible and drape over the cornea, which means they follow every bump and valley of the uneven surface. Instead of correcting the irregularity, they replicate it. The higher-order aberrations (complex light distortions that cause halos, coma, and ghosting) that result from post-surgical corneas require a rigid optical surface to neutralize them, and that is exactly what scleral lenses provide.
You may be a candidate for scleral lenses after refractive surgery if you experience any of the following and have not found relief with glasses or standard soft lenses.
- Persistent blurred or distorted vision that glasses do not fully correct
- Halos or starbursts around lights, especially at night
- Monocular double vision (seeing a ghost image with one eye alone)
- Dry, irritated eyes that do not respond well to artificial tears
- Vision that fluctuates during the day, often better in the morning
An eye doctor can detect corneal irregularities using corneal topography, a painless scan that maps the surface of your eye in detail, even when your standard prescription numbers look relatively normal.
How Scleral Lenses Correct Post-Surgical Vision
Scleral lenses work differently from any other type of contact lens or glasses. Instead of sitting on the cornea, they vault completely over it and rest on the white part of the eye (the sclera). This design makes them uniquely effective for eyes with irregular or post-surgical corneas.
Because the scleral lens vaults over the cornea without touching it, there is a space between the back of the lens and the corneal surface. That space is filled with sterile saline solution. The fluid fills in all the valleys and covers all the peaks of the irregular cornea, creating a perfectly smooth, uniform optical surface.
Light entering the eye passes through the rigid, smooth front surface of the lens rather than through the uneven cornea. The result is a clear, stable retinal image that irregular corneas cannot produce on their own. This mechanism works regardless of whether the irregularity comes from LASIK, PRK, RK, or a previous corneal transplant.
Post-surgical dry eye is one of the most common complaints after LASIK. The procedure cuts small corneal nerves that regulate tear production, and it can take months to years for full nerve recovery. Many patients rely on frequent artificial tear drops just to get through the day.
Scleral lenses address dry eye and vision correction at the same time. The saline reservoir between the lens and the cornea continuously bathes the ocular surface throughout the day. Patients who previously needed drops every hour often find that their need for artificial tears decreases significantly while wearing scleral lenses. Your eye doctor will assess your tear production, nerve recovery, and symptom severity to determine how much relief a scleral lens is likely to provide for you specifically.
If you have been diagnosed with post-LASIK ectasia that is still progressing, your eye doctor may recommend corneal collagen cross-linking (CXL) before fitting scleral lenses. CXL is an outpatient procedure that uses UV light and riboflavin eye drops to strengthen the collagen fibers in the cornea and stop the progressive thinning.
CXL stabilizes the corneal shape but does not restore a smooth surface. Once the cornea has stabilized over a period of weeks to months, scleral lenses are fitted to the new, stable profile to correct the remaining irregularity and restore clear vision. In some cases, your eye doctor may also discuss intracorneal ring segments as a way to modify corneal shape before or alongside scleral lens fitting.
- CXL stops ectasia from progressing but does not reverse existing surface irregularity
- Scleral lenses are fitted after corneal shape has stabilized following CXL
- The two approaches together address both progression and ongoing vision correction
Our Specialty Contact Lens Team
Fitting scleral lenses on post-surgical corneas requires advanced diagnostic tools, significant clinical experience, and a deep understanding of how refractive surgery changes the eye. Our optometry team brings all of that to every fitting appointment.
Dr. Paul Zerbinopoulos has specialized in scleral lens fittings since 2008 and served as past president of the Rhode Island Optometric Association. Dr. Earle Scharff brings over 40 years of specialty lens experience, including rigid gas-permeable, multifocal, toric, and scleral lens designs. Dr. Lori Boivin trained at Massachusetts Eye and Ear and focuses on specialty contact lens fittings for complex corneal cases. Together, our optometry team has the depth of experience to address even the most challenging post-surgical corneas.
Post-surgical corneas have unusual, often asymmetric shapes that require highly detailed measurement before a scleral lens can be designed. Our team uses corneal topography to capture a precise map of your corneal surface. In complex cases, anterior segment OCT (a type of cross-sectional imaging) may be added to provide even greater accuracy in understanding the shape and clearance needed for an ideal fit.
Because post-surgical surfaces are less predictable than healthy corneas, the fitting process may require more visits than a standard scleral lens fitting. Each follow-up visit allows your eye doctor to refine the lens parameters until the vision and comfort are optimized for your eye.
Not every post-surgical patient needs the same lens design. Our team fits a full range of specialty lens types and selects the right option based on your corneal shape, prescription, and lifestyle needs.
- Standard scleral lenses for irregular astigmatism after LASIK, PRK, or RK
- Wavefront-guided scleral designs to address higher-order aberrations including halos and ghosting
- Multifocal scleral lenses for patients over 40 who also need near correction
- Custom scleral designs for eyes that have undergone corneal transplant following failed refractive surgery
Frequently Asked Questions
These answers address the questions patients most often bring to their specialty lens consultations after refractive surgery.
The timeline depends on whether your cornea is stable. If ectasia is still progressing, your eye doctor will likely recommend cross-linking first. Fitting a scleral lens to a cornea that is still changing leads to lenses that quickly become inaccurate. Once your eye doctor confirms stability, typically through repeated topography measurements taken weeks apart, the fitting process can begin. In cases where the complication is irregular astigmatism without active progression, fitting may begin sooner.
Scleral lenses reduce or eliminate halos and glare that are caused by irregular corneal surfaces, because the rigid lens dome creates a smooth optical front surface that replaces the irregular cornea. Halos caused by pupil size changes in low light may persist to a small degree. If wavefront-guided lens designs are appropriate for your eye, they can target the specific higher-order aberrations responsible for your individual symptoms and reduce them further.
It is not too late. Many of our patients with RK-related vision problems come to us years or even decades after their original surgery. The scleral lens vaults over the weakened, incision-bearing cornea and corrects irregular astigmatism and diurnal (day-to-night) vision fluctuation regardless of how long ago the procedure was performed. Your eye doctor will map the RK-altered surface to create a lens that fits the unique contours of your cornea.
Yes. Scleral lenses work well after corneal transplants by vaulting over the graft and correcting residual irregular astigmatism, which is common even after a technically successful transplant. The saline reservoir also provides a cushioning layer that protects the transplanted tissue from direct lens contact. Your eye doctor will evaluate the health and stability of the graft before beginning the fitting process.
If you are over 40 and your refractive surgery was intended to correct distance vision, you may still need some help with near tasks. This is not a complication but a natural age-related change called presbyopia. Our optometry team can fit multifocal scleral lens designs that incorporate near correction into the lens itself. Alternatively, some patients prefer wearing low-power reading glasses over their scleral lenses for close work, which is a perfectly practical option.
Most scleral lenses are replaced every one to three years, depending on how well you care for them and whether your corneal shape changes. If your condition is stable, your parameters are unlikely to change significantly between visits. If your cornea does shift, your eye doctor can update your prescription at your regular follow-up appointments so your vision stays as sharp as possible. Annual or biannual check-ins are standard for post-surgical scleral lens wearers.
Take the Next Step Toward Clearer Vision
Rhode Island Eye Institute brings together fellowship-trained corneal specialists and a specialty contact lens team with decades of combined experience fitting complex post-surgical eyes. Our team has helped countless patients who believed they were out of options after LASIK, PRK, or RK finally see clearly and comfortably again. We welcome you to schedule a specialty lens evaluation and find out whether scleral lenses are the right next step for your vision.