Corneal Cross-Linking (CXL)

Consultations offered at our three convenient locations in Farmington Hills, Garden City and Rochester Hills, MI

Advanced Treatment for Keratoconus and Corneal Ectasia

Corneal cross-linking (CXL) is a minimally invasive treatment designed to strengthen the cornea and help prevent the progressive corneal distortion associated with keratoconus and corneal ectasia.

Our practice offers both epithelium-on (epi-on) and epithelium-off (epi-off) corneal cross-linking, allowing treatment to be individualized based on each patient’s age, corneal shape and thickness, diagnosis, and other clinical findings.

What Is Keratoconus?

Keratoconus is a condition in which the normally round cornea becomes thinner and progressively bulges forward into a cone-like shape.

This change can cause:

  • Blurred or distorted vision
  • Increasing or irregular astigmatism
  • Glare and halos
  • Frequent changes in glasses prescriptions
  • Difficulty achieving clear vision with glasses
  • Increasing dependence on specialty contact lenses

Keratoconus often begins during the teenage years or early adulthood and can progress more rapidly in younger patients.

How Does Corneal Cross-Linking Work?

Cross-linking combines riboflavin (vitamin B2) with controlled ultraviolet-A (UV-A) light.

The interaction between riboflavin and UV-A light produces additional molecular bonds, or “cross-links,” within the corneal collagen. These cross-links strengthen the corneal structure and make it more resistant to the shape changes associated with keratoconus.

The goal is straightforward:

Strengthen the cornea before keratoconus causes additional, potentially permanent distortion of vision.

Epi-On vs. Epi-Off Cross-Linking

There are two principal approaches to corneal cross-linking. We offer both so treatment can be tailored to the individual eye.

Epi-On Cross-Linking

With epithelium-on (epi-on) cross-linking, the protective outer layer of the cornea—the epithelium—remains intact during treatment.

Epi-on treatment may offer several advantages for appropriately selected patients, including:

  • No removal of the corneal epithelium
  • Less discomfort during recovery
  • Faster return to normal activities
  • Reduced disruption of the corneal surface
  • Lower risk of complications associated with epithelial removal

An FDA-approved epi-on cross-linking treatment is available for keratoconus in adults and children age 13 and older.

Unlike the FDA-approved epi-off indication for keratoconus, the FDA-approved epi-on treatment does not require documented progression before treatment. This may be particularly important in younger patients, in whom keratoconus can sometimes progress rapidly.

Epi-Off Cross-Linking

With epithelium-off (epi-off) cross-linking, the thin outer epithelial layer of the cornea is carefully removed before riboflavin is applied.

Removing the epithelium allows riboflavin to penetrate directly into the corneal tissue before UV-A treatment.

FDA-approved epi-off cross-linking is used for:

  • Progressive keratoconus
  • Corneal ectasia following refractive surgery, including ectasia after procedures such as LASIK or PRK

Following epi-off treatment, a temporary bandage contact lens is generally placed on the eye while the epithelium heals.

Patients can expect several days of light sensitivity, irritation, tearing, and blurred vision while the surface heals.

Which Cross-Linking Treatment Is Right for Me?

There is no single cross-linking approach that is best for every patient.

We perform a detailed evaluation that may include:

  • Corneal topography and tomography
  • Corneal thickness mapping
  • Evaluation of the anterior and posterior corneal surfaces
  • Review of previous examinations to determine progression
  • Refraction and visual acuity testing
  • Assessment of age and risk factors for future progression

Based on these findings, your surgeon will discuss whether epi-on or epi-off cross-linking is more appropriate for your particular cornea.

Why Early Detection Matters

Glasses and contact lenses can improve vision in keratoconus, but they do not strengthen the cornea or treat the underlying biomechanical weakness.

Cross-linking is different.

Its primary purpose is to stabilize the cornea and reduce the risk of further corneal distortion.

This makes early diagnosis particularly important. Waiting until vision becomes severely affected may mean that significant corneal distortion has already occurred.

For younger patients, early evaluation can be especially valuable because keratoconus may progress more quickly during adolescence and early adulthood.

Will Cross-Linking Improve My Vision?

The primary purpose of cross-linking is to strengthen and stabilize the cornea, not to eliminate glasses or contact lenses.

Some patients experience improvement in corneal shape or vision following treatment, but improvement cannot be guaranteed.

After the cornea stabilizes, additional vision correction may include:

  • Glasses
  • Soft contact lenses
  • Rigid gas-permeable lenses
  • Scleral lenses
  • Other corneal or refractive treatments when appropriate

Is Cross-Linking Safe?

Corneal cross-linking has been extensively studied. As with any medical procedure, however, there are potential risks and benefits.

Possible complications vary depending upon the technique and can include inflammation, infection, corneal haze, delayed healing, discomfort, changes in vision, and continued progression despite treatment.

We will review the benefits, risks, alternatives, and expected recovery of the recommended cross-linking procedure with you before treatment.

Do I Need Cross-Linking?

You should consider a keratoconus evaluation if:

  • You have been diagnosed with keratoconus
  • Your astigmatism has been increasing
  • Your glasses prescription changes frequently
  • Your vision cannot be fully corrected with glasses
  • A family member has keratoconus
  • You have been told your cornea is unusually thin or irregular
  • You have developed corneal changes following LASIK or another refractive procedure

Modern corneal imaging can detect subtle changes in corneal shape and thickness, sometimes before a patient notices a significant deterioration in vision.

Schedule a Keratoconus & Cross-Linking Evaluation

If you have keratoconus or have been told that you may have an irregular cornea, a comprehensive evaluation can determine the severity of the condition and whether treatment should be considered.

Because we offer both epi-on and epi-off corneal cross-linking, treatment can be selected based on the individual characteristics of your eyes rather than taking a one-size-fits-all approach.

Schedule a Keratoconus & Corneal Cross-Linking Evaluation today.