485 Participants Needed

Corneal Crosslinking for Keratoconus

Recruiting at 10 trial locations
LB
Overseen ByLuAnn Bryant
Age: Any Age
Sex: Any
Trial Phase: Phase 3
Sponsor: Clinical Research Consultants, Inc.
No Placebo GroupAll trial participants will receive the active study treatment (no placebo)
Pivotal Trial (Near Approval)This treatment is in the last trial phase before FDA approval
Prior Safety DataThis treatment has passed at least one previous human trial

What You Need to Know Before You Apply

What is the purpose of this trial?

This trial explores whether corneal crosslinking (CXL) can prevent or slow vision loss in individuals with conditions like keratoconus, which thin and misshape the cornea. CXL involves applying vitamin B2 eye drops and exposing the eye to UV light to strengthen the cornea. Participants will be divided into two groups, receiving UV light for either 18 or 24 minutes. Individuals diagnosed with keratoconus or similar corneal conditions affecting vision might be suitable for this study. As a Phase 3 trial, this study represents the final step before FDA approval, offering participants the opportunity to contribute to a potentially groundbreaking treatment.

Will I have to stop taking my current medications?

The trial information does not specify whether you need to stop taking your current medications. However, if you wear contact lenses, you will need to stop wearing them for a certain period before examinations.

What prior data suggests that corneal crosslinking is safe for treating keratoconus?

Studies have shown that the Epi-ON corneal crosslinking (CXL) treatment is generally safe for people with keratoconus. In one study, no patients experienced corneal cloudiness after receiving Epi-ON CXL, suggesting the treatment is well-tolerated. Another study found that both Epi-ON and epithelium-off CXL treatments remained safe over a 12-month period.

Overall, research indicates that Epi-ON CXL is a safe option for those with corneal conditions like keratoconus. While no treatment is without risk, these studies provide reassuring evidence about the safety of Epi-ON CXL.12345

Why do researchers think this study treatment might be promising for keratoconus?

Epi-ON Corneal Collagen Crosslinking is unique because it represents a less invasive option for treating keratoconus, a condition that causes the cornea to thin and bulge. Unlike traditional Epi-OFF crosslinking, which involves removing the cornea's outer layer, Epi-ON keeps it intact, potentially reducing recovery time and discomfort. Researchers are excited because this method uses UVA light and riboflavin to strengthen the cornea with shorter irradiation times, aiming to provide effective results with fewer side effects. By offering a gentler approach, Epi-ON could make treatment more accessible and appealing to patients.

What evidence suggests that corneal crosslinking might be an effective treatment for keratoconus?

Research has shown that Epi-ON corneal collagen crosslinking (CXL) can effectively slow or halt the progression of keratoconus. One study found that it significantly improved vision clarity and stopped the disease from advancing. Additionally, patients who underwent Epi-ON CXL did not experience issues such as cloudiness or corneal damage. While both Epi-ON and Epi-OFF methods are available, Epi-ON is gentler on the eye's surface. Overall, CXL strengthens the cornea, helping to stabilize vision in people with keratoconus.

In this trial, participants will be randomized to receive UVA irradiation with 15-second off-on cycling for either 18 minutes or 24 minutes as part of the Epi-ON CXL treatment.35678

Are You a Good Fit for This Trial?

This trial is for individuals aged 8 or older with certain corneal diseases like keratoconus, post-LASIK ectasia, and others. Participants must be able to follow the study's procedures and visit schedule. Women who can get pregnant should not be nursing or expecting and must agree to use birth control around the treatment period.

Inclusion Criteria

I can follow all study instructions and attend all follow-up visits.
I am not pregnant or breastfeeding and agree to use birth control before and after treatment.
I am at least 8 years old.
See 2 more

Timeline for a Trial Participant

Screening

Participants are screened for eligibility to participate in the trial

2-4 weeks
1 visit (in-person)

Treatment

Participants receive corneal crosslinking (CXL) treatment with riboflavin drops and UVA exposure for either 18 or 24 minutes

1 day
1 visit (in-person)

Follow-up

Participants are monitored for safety and effectiveness after treatment, with several eye and vision tests conducted

6 months
Up to 7 visits (in-person)

What Are the Treatments Tested in This Trial?

Interventions

  • Epi-ON Corneal Collagen Crosslinking

Trial Overview

The trial tests Epi-ON corneal crosslinking (CXL) using riboflavin drops followed by UVA light exposure to strengthen the cornea and halt disease progression. It compares two durations of UVA exposure: one group will have an 18-minute session while another a 24-minute session.

How Is the Trial Designed?

2

Treatment groups

Experimental Treatment

Group I: UVA 24 minuteExperimental Treatment1 Intervention
Group II: UVA 18 minuteExperimental Treatment1 Intervention

Find a Clinic Near You

Who Is Running the Clinical Trial?

Clinical Research Consultants, Inc.

Lead Sponsor

Trials
7
Recruited
1,400+

Woolfson Eye Institute

Lead Sponsor

Citations

Outcomes of Epi-On Collagen Cross-Linkage Procedure ...

Our results showed significant improvement in visual acuity and K-max readings indicating a halting of the progression of keratoconus in our ...

Long-Term Outcomes in Crosslinking Therapy for Patients ...

None of the patients who underwent epi-On CXL developed corneal turbidity, epithelial toxicity, and corneal scarring. Keratoconus progression was observed in 1 ...

Efficacy and Safety of Epi-On vs Epi-Off Corneal Cross- ...

This review compares two CXL methods, epithelium-on (epi-on) and epithelium-off (epi-off), to assess their safety and effectiveness for managing corneal ...

Safety and Efficacy of Epithelium-Off Corneal Collagen ...

All studies showed a decreased progression rate in treated patients compared with controls. Improvement in the maximum keratometry (Kmax) value, ...

Epithelial-On (EPI-On) Corneal-Collagen Cross-Linking ...

This result tells us that standard Epi-Off CXL is more effective at flattening the anterior corneal surface than AXL in the long run.

Efficacy and Safety of Epi-On vs Epi-Off Corneal Cross-Linking ...

The primary outcome was the change in maximal keratometry (Kmax) at 12 months, with secondary outcomes including safety profile, best-corrected ...

Outcomes of Epi-On Collagen Cross-Linkage Procedure ...

Our results showed significant improvement in visual acuity and K-max readings, indicating halting of the progression of keratoconus in our ...

Save sight keratoconus registry study: Transepithelial ...

Transepithelial and epithelium-off corneal collagen crosslinking to treat keratoconus were safe and effective at 12 months follow up.