Corneal Cross Linking (CXL) for Keratoconus
Stabilizing the Cornea. Protecting Your Future Vision.
Keratoconus is a progressive condition in which the cornea weakens, thins, and gradually bulges outward. As it progresses, vision becomes increasingly distorted, prescriptions change frequently, and glasses often no longer provide clear sight.
Corneal Cross-Linking (CXL) is a scientifically proven treatment designed to strengthen the cornea and slow or halt progression.
At Keratoconus Specialists of Maryland, keratoconus care is managed collaboratively by our specialty lens doctors alongside cornea specialist Richard Adler, MD, ensuring comprehensive medical evaluation, stabilization planning, and long-term visual rehabilitation.
What Is Corneal Cross-Linking?
Corneal Cross-Linking strengthens the structural collagen fibers of the cornea using:
- Riboflavin (vitamin B2) eye drops
- Controlled ultraviolet (UV) light
This process increases corneal rigidity and helps prevent further bulging.
Important to Understand:
- CXL is designed to stop progression, not reverse existing corneal shape changes.
- It is a stabilizing procedure, not a vision-correcting procedure.
- Most patients still require specialty lenses after treatment for optimal clarity.
FDA Approval & Recent Updates
The regulatory landscape for cross-linking has evolved significantly.
2016 FDA Approval
In 2016, the FDA approved the first corneal cross-linking system in the United States for progressive keratoconus and post-refractive ectasia. This approval applies to the epithelium-off (epi-off) technique using Photrexa® riboflavin and the KXL® UV system.
Epi-off cross-linking remains a widely used and well-established treatment protocol.
2025 FDA Update: Epi-On Cross-Linking
In October 2025, the FDA approved Epioxa™, the first FDA-approved epithelium-on (epi-on) corneal cross-linking therapy for keratoconus patients aged 13 and older.
Unlike traditional epi-off treatment, epi-on cross-linking does not require removal of the corneal surface layer. This may offer:
- Reduced post-procedure discomfort
- Faster surface healing
- A different recovery experience
The approval of epi-on therapy represents an important advancement in keratoconus management and expands available treatment options.
Determining which protocol is appropriate depends on individual corneal findings, progression status, and overall eye health.
Who Is a Candidate for Cross-Linking?
You may be a candidate if:
- Your prescription is changing frequently
- Corneal imaging shows progression
- You are newly diagnosed
- You are in your teens or early adulthood
- There is documented corneal thinning or increasing irregularity
Early intervention is critical. Once significant structural damage occurs, cross-linking cannot reverse it.
Cross-Linking Is Step One - Not the Final Step
While CXL stabilizes the cornea, it does not correct distorted optics already present.
After stabilization, many patients achieve dramatically clearer vision with advanced specialty lens designs, including:
- Rigid Gas Permeable (RGP) Lenses
- Custom Scleral Lenses
- Wavefront Sclera Lenses
- PVR PROSE Treatment
- Impression-based lens designs
Our practice specializes in advanced keratoconus lens correction. Many patients who were told “nothing more could be done” achieve functional, stable, high-quality vision once properly stabilized and fitted.
Cross-linking protects your cornea.
Precision optical design restores your clarity.
Comprehensive Keratoconus Care in Maryland
True keratoconus management requires more than a single procedure. It requires:
- Early detection
- Careful monitoring
- Medical stabilization
- Advanced visual rehabilitation
With the combined expertise of our specialty lens doctors and cornea specialist Dr. Richard Adler, patients receive coordinated care designed for long-term success.
Protect Today. See Clearly Tomorrow.
If you have been diagnosed with keratoconus — or suspect progression — timely evaluation is essential.
Schedule a comprehensive keratoconus consultation to determine:
- Whether cross-linking is appropriate
- Which FDA-approved protocol may apply
- How to optimize your vision after stabilization
Your cornea can be stabilized.
Your vision can be optimized.
And your future can be protected.