ClinicalTrials.gg
RecruitingNCT05314738Updated Jul 8, 2024

Safety and Efficacy of Corneal Cross-linking in Subjects With Keratoconus

A Phase 1/2 interventional study of NXL Energy 1 and NXL Energy 2 in Progressive Keratoconus, sponsored by Glaukos Corporation. Recruiting at 3 sites in United States. Open to participants aged 18 Years to 55 Years. Per ClinicalTrials.gov, last updated 2024-07-08.

Sponsored by Glaukos Corporation · Phase 1/2, Interventional, and Treatment

From the registry’s dates

  • Primary completion was expected by Aug 2025, 1 year 3 months ago, but the record still lists the study as recruiting.
  • Started Mar 2022; still recruiting 4 years 8 months later.
Phase
Phase 1/2
Study type
Interventional
Enrollment
150
Allocation
Randomized
Ages
18 Years to 55 Years
Sex
All
01

Study summary

Clinical Trial to Evaluate the Safety and Efficacy of Corneal Cross-linking in Subjects with Keratoconus.

Read the detailed description

This is a a dose ranging, multi-center, sham-controlled study to evaluate the safety and efficacy of epithelium-on corneal collagen cross-linking. The study will evaluate safety and efficacy in subjects who have keratoconus.

02

Conditions studied

  • Progressive Keratoconus

Browse trials for

Keywords

  • Eye rubbing
  • Collagen cross-linking
  • Keratoconus
  • Progressive Keratoconus
03

In context

Keratoconus

313 studies on the registry are indexed under Keratoconus; 56 are open to participants now.

This study's planned enrollment of 150 is above the median of 40 across 205 interventional studies indexed under Keratoconus.

Browse Keratoconus studies →

Lead sponsor

Glaukos Corporation is the lead sponsor of 67 studies on the registry; 14 are open to participants now.

Of its 13 completed or terminated interventional studies of FDA-regulated products, 7 (54%) have results posted.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years to 55 Years
Sexes eligible
All
Accepts healthy volunteers
No

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  • Provide written
  • Ability to hold gaze sufficiently stable for study testing
  • Willingness and ability to follow all instructions and comply with schedule for follow-up visits
  • Have a diagnosis of keratoconus

Exclusion criteria

Exclusion Criteria:

  • Known allergy or sensitivity to the test articles or components
  • Any disease causing abnormal topography other than keratoconus
  • Prior or current ocular condition (other than keratoconus) in the study eye that may predispose the eye for future complications
Terms in these criteria, in plain language(1)

Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.

Informed consent

Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.

You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.

05

Study design

Phase
Phase 1 / Phase 2
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Single (Participant)
Enrollment
150 participants (estimated)

Study arms

  • Experimental
    Riboflavin Ophthalmic Solution and UV-A Irradiation Group 1 / Cohort 1

    Riboflavin Solution + Exposure to NXL system to achieve total energy level 3

    Combination Product: NXL Energy 3

  • Active comparator
    Riboflavin Ophthalmic Solution and UV-A Irradiation Group 3 / Cohort 2A

    Riboflavin Solution + Exposure to NXL system to achieve total energy level 1

    Combination Product: NXL Energy 1

  • Active comparator
    Riboflavin Ophthalmic Solution and UV-A Irradiation Group 4 / Cohort 2A

    Riboflavin Solution + Exposure to NXL system to achieve total energy level 2

    Combination Product: NXL Energy 2

  • Active comparator
    Riboflavin Ophthalmic Solution and UV-A Irradiation Group 5 / Cohort 2A

    Riboflavin Solution + Exposure to NXL system to achieve total energy level 3

    Combination Product: NXL Energy 3

  • Active comparator
    Riboflavin Ophthalmic Solution and UV-A Irradiation Group 3 / Cohort 2B

    Riboflavin Solution + Exposure to NXL system to achieve total energy level 1

    Combination Product: NXL Energy 1

  • Active comparator
    Riboflavin Ophthalmic Solution and UV-A Irradiation Group 4 / Cohort 2B

    Riboflavin Solution + Exposure to NXL system to achieve total energy level 2

    Combination Product: NXL Energy 2

  • Active comparator
    Riboflavin Ophthalmic Solution and UV-A Irradiation Group 5 / Cohort 2B

    Riboflavin Solution + Exposure to NXL system to achieve total energy level 3

    Combination Product: NXL Energy 3

  • Sham comparator
    Placebo Group 2 / Cohort 2B

    Sham Solution with no exposure to NXL System

    Combination Product: Sham Treatment

Interventions

  • Combination productNXL Energy 1

    Riboflavin drops + NXL System to Total Energy Level 1

  • Combination productNXL Energy 2

    Riboflavin drops + NXL System to Total Energy Level 2

  • Combination productNXL Energy 3

    Riboflavin drops + NXL System to Total Energy Level 3

  • Combination productSham Treatment

    Sham Drops and No exposure to NXL system

06

What researchers measure

Primary outcomes

  1. Topography

    Change in Kmax topography value from baseline

    Time frame: 12 Months

Secondary outcomes

  1. Distance Uncorrected Visual Acuity (UCVA)

    Change in Distance UCVA

    Time frame: 12 Months

07

Study locations

3 of 3 sites recruiting
  • Glaukos Investigative Site
    Dothan, Alabama 36301, United States
    Recruiting
  • Glaukos Investigative Site
    Teaneck, New Jersey 07666, United States
    Recruiting
  • Glaukos Investigative Site
    Westerville, Ohio 43082, United States
    Recruiting
08

References and documents

Individual participant data

Plan to share: No

No publications or documents are linked to this record.

09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Jul 8, 2024, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT05314738
Responsible party
Sponsor
First posted
Apr 6, 2022
Start date
Mar 8, 2022
Primary completion
Aug 2025 (estimated)
Completion
Feb 2026 (estimated)
Last update
Jul 8, 2024

Study contacts

Marco Armijo
Contact
marmijo@glaukos.com
562-761-7965

Oversight

Data monitoring committee
Yes
FDA-regulated drug
Yes
FDA-regulated device
Yes
View the source record on ClinicalTrials.gov ↗

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