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RecruitingNCT03319082CXLUpdated Feb 23, 2024

Observational Registry to Assess the Durability of Effect of CXL in Patients With Corneal Ectasia After Refractive Surgery

An observational study in Corneal Ectasia, sponsored by Glaukos Corporation. Recruiting at 11 sites in United States. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2024-02-23.

Sponsored by Glaukos Corporation · Observational

Study type
Observational
Model
Cohort
Time perspective
Prospective
Enrollment
200
Ages
18 Years and older
Sex
All
01

Study summary

The objectives of this post market registry are to evaluate the safety and durability of treatment effect up to 3 years following cross-linking performed with Photrexa Viscous (riboflavin 5'- phosphate in 20% dextran ophthalmic solution), Photrexa (riboflavin 5'- phosphate ophthalmic solution), and the KXL System in patients with corneal ectasia following refractive surgery.

Read the detailed description

Approximately 200 patients who are planning to undergo or have undergone CXL for the treatment of corneal ectasia following refractive surgery in one or both eyes according to the prescribing information in the Photrexa Viscous and Photrexa Package Insert could be enrolled. Patients will be followed for safety and effectiveness at Months 3, 6, 12, 24 and 36 following cross-linking treatment.

02

Conditions studied

  • Corneal Ectasia
03

Who can participate

Ages eligible
18 Years and older
Sexes eligible
All
Accepts healthy volunteers
No
Sampling method
Non-probability sample

Study population

Patients with corneal ectasia following refractive surgery who are planning to undergo or have undergone corneal collagen cross-linking in one or both eyes according to the Photrexa Viscous and Photrexa prescribing information.

Inclusion criteria

  1. Be at least 18 years of age, male or female, of any race;
  2. Provide written informed consent and sign a HIPAA form;
  3. Willingness and ability to follow all instructions and comply with schedule for study visits;
  4. Have a diagnosis of corneal ectasia post-refractive surgery (such as LASIK, PRK);
  5. Planning to undergo (or have undergone within the past 90 days) corneal collagen cross-linking with PHOTREXA VISCOUS/ PHOTREXA and the KXL System, per the prescribing information (NOTE: Complete treatment and follow-up data, including any product-related events at time of procedure through the time of enrollment must be available);
  6. For females capable of becoming pregnant, agree to have urine pregnancy testing performed prior to enrolling in the registry; must not be pregnant or lactating.

Exclusion criteria

Exclusion Criteria:

  1. If female, be pregnant, nursing, or have a positive urine pregnancy test prior to enrollment in the registry;
  2. The Investigator may exclude or discontinue any patient for any sound medical reason.
04

Study design

Observational model
Cohort
Time perspective
Prospective
Enrollment
200 participants (estimated)
Target follow-up
36 Months
Patient registry
Yes

Groups and cohorts

  • CXL Group

    Patients with corneal ectasia following refractive surgery who had corneal collagen cross-linking in one or both eyes according to the Photrexa Viscous and Photrexa prescribing information

    Combination Product: Corneal Collagen Cross-linking

Interventions

  • Combination productCorneal Collagen Cross-linking

    Photrexa Viscous (riboflavin 5'-phosphate in 20% dextran ophthalmic solution), Photrexa (riboflavin 5'-phosphate ophthalmic solution), and the KXL System (UV Irradiation).

05

What researchers measure

Primary outcomes

  1. Kmax

    Change from pretreatment baseline in maximum corneal curvature

    Time frame: 36 months

  2. BCVA

    Change from pretreatment baseline in BCVA

    Time frame: 36 month

06

Study locations

11 of 11 sites recruiting
  • Stanford University School of Medicine
    Palo Alto, California 94303, United States
    Recruiting
  • Chu Vision Institute, P.A.
    Bloomington, Minnesota 55420, United States
    Recruiting
  • Vance Thompson Vision - MT
    Bozeman, Montana 59718, United States
    Recruiting
  • Vance Thompson Vision - ND
    W. Fargo, North Dakota 58078, United States
    Recruiting
  • Comprehensive EyeCare of Central Ohio
    Westerville, Ohio 43082, United States
    Recruiting
  • Vantage Eye Care, LLC
    Bala-Cynwyd, Pennsylvania 19004, United States
    • Gwen Toti · Contact · gtoti@oppdoctors.com · 484-434-2706
    • Brandon Ayres, MD · Principal investigator
    Recruiting
  • Carolina Cataract & Laser Center
    Ladson, South Carolina 29456, United States
    Recruiting
  • Slade & Baker Vision
    Houston, Texas 77027, United States
    Recruiting
  • Hoopes Vision
    Draper, Utah 84020, United States
    • Michele Avila, OD · Contact · mavila@hoopesvision.com · 801-568-0200
    • Majid Moshirfar, MD · Principal investigator
    Recruiting
  • See Clearly Vision Group
    McLean, Virginia 22102, United States
    • Claire Thomas · Contact · cthomas@seeclearly.com · 703-827-5454
    • Christine Tagayun, MD · Principal investigator
    Recruiting
  • Northwest Eye Surgeons
    Seattle, Washington 98133, United States
    • Claire Callaghan · Contact · ccallaghan@nweyes.com · 206-528-6000
    • Audrey Rostov, MD · Principal investigator
    Recruiting
07

References and documents

Publications

  • Hersh PS, Stulting RD, Muller D, Durrie DS, Rajpal RK; U.S. Crosslinking Study Group. U.S. Multicenter Clinical Trial of Corneal Collagen Crosslinking for Treatment of Corneal Ectasia after Refractive Surgery. Ophthalmology. 2017 Oct;124(10):1475-1484. doi: 10.1016/j.ophtha.2017.05.036. Epub 2017 Jun 24. PubMed 28655538 ↗

Individual participant data

Plan to share: No

08

Registry details

Key details

Study ID
NCT03319082
Lead sponsor
Glaukos Corporation
Responsible party
Sponsor
First posted
Oct 24, 2017
Start date
Oct 4, 2017
Primary completion
Feb 2026 (estimated)
Completion
Feb 2026 (estimated)
Last update
Feb 23, 2024

Study contacts

Kerry Stephens, OD
Contact
kstephens@glaukos.com
949-481-8057
Kerry Stephens
study director · Glaukos Corporation

Oversight

Data monitoring committee
No
FDA-regulated drug
Yes
FDA-regulated device
Yes
View the source record on ClinicalTrials.gov ↗

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