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TerminatedNCT01398852Updated Jun 29, 2022Results posted

Safety and Effectiveness Study of the VEGA UV-A System for Cross-linking in Eyes With Keratoconus and Ectasia

A Phase 3 interventional study of Riboflavin and VEGA UV-A Illumination System in Keratoconus and Ectasia, sponsored by Topcon Medical Systems, Inc.. Terminated at 13 sites in United States. Open to participants aged 12 Years and older. Per ClinicalTrials.gov, last updated 2022-06-29.

Sponsored by Topcon Medical Systems, Inc. · Phase 3, Interventional, and Other

Phase
Phase 3
Study type
Interventional
Enrollment
500
Allocation
Not applicable
Ages
12 Years and older
Sex
All
01

Study summary

The purpose of this research study is to evaluate the long tern safety and effectiveness of cross-linking in eyes with keratoconus and ectasia.

02

Conditions studied

  • Keratoconus and Ectasia
03

In context

Keratoconus

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

This study's enrollment of 500 is above the median of 40 across 203 interventional studies indexed under Keratoconus.

Browse Keratoconus studies →

Lead sponsor

Topcon Medical Systems, Inc. is the lead sponsor of 25 studies on the registry; none are open to participants now.

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

04

Who can participate

Ages eligible
12 Years and older
Sexes eligible
All
Accepts healthy volunteers
No

Inclusion criteria

  • 12 years of age or older
  • Diagnosis of Keratoconus or Ectasia
  • Central or Inferior steepening on the Pentacam map
  • Topography consistent with Keratoconus or Ectasia
  • BSCVA 20/20 or worse
  • Removal of contact lenses for required period of time
  • Signed written informed consent
  • Willingness and ability to comply with schedule for follow up visits

Exclusion criteria

Exclusion Criteria

  • For Keratoconus, a history of previous corneal surgery
  • Corneal pachymentry equal to or greater and 400
  • Previous ocular condition in the eyes to be treated that may predispose the eye for future complications
  • A history of chemical injury or delayed healing
  • Pregnancy
  • A known sensitivity to the study medications
  • Nystagmus or any other condition that would prevent a steady gaze during treatment or other diagnostic tests
  • Presence or history of any other condition or finding that makes the patient unsuitable as a candidate
05

Study design

Phase
Phase 3
Primary purpose
Other
Allocation
Not applicable
Intervention model
Single group
Masking
None (open label)
Enrollment
500 participants (actual)

Study arms

  • Experimental
    CXL Treatment

    All eyes to be treated with riboflavin and UV light

    Drug: Riboflavin · Device: VEGA UV-A Illumination System

Interventions

  • DrugRiboflavin

    Riboflavin is a solution that will be delivered to the treatment area

  • DeviceVEGA UV-A Illumination System

    This is a portable electronic device designed to deliver a dose of UV-A light to the treatment area

06

What researchers measure

Primary outcomes

  1. Changes in Corneal Curvature

    Time frame: 24 MO

07

Results

Posted Mar 4, 2013

Participant flow

The recruitment period started December 2010 and ended June 2012 at medical clinics throughout the country.

Participant flow — Overall Study
MilestoneCXL Treatment
Started372
Completed0
Not completed372

Outcome measures

PrimaryChanges in Corneal Curvature
Time frame:
24 MO

No measurements were reported for this outcome.

Adverse events

Non-serious events are listed at a 0% frequency threshold.

Adverse event summary by group
GroupDeathsSeriousOther
CXL Treatment—0/372 (0%)0/372 (0%)

Baseline characteristics

Age, Categorical
Age, Categorical(Participants)CXL Treatment
<=18 yearsNA
Between 18 and 65 yearsNA
>=65 yearsNA
Age, Continuous
Age, Continuous(years)CXL Treatment
MeanNA ± NA
Sex: Female, Male
Sex: Female, Male(Participants)CXL Treatment
FemaleNA
MaleNA
Region of Enrollment
Region of Enrollment(participants)CXL Treatment
United States372
08

Study locations

13 sites
  • Barnet Dulaney Perkins Eye Center
    Phoenix, Arizona, United States
  • Woolfson Eye Institute
    Atlanta, Georgia, United States
  • Massachusetts Eye And Ear Infirmary
    Boston, Massachusetts, United States
  • Minnesota Eye Consultants
    Bloomington, Minnesota, United States
  • Laser and Corneal Surgery Assoc. PC
    New York, New York 10022, United States
  • Mt Sinai Hospital
    New York, New York, United States
  • Pamel Vision & Laser Group
    New York, New York, United States
  • Cleveland Clinic-Cole Eye Institute
    Cleveland, Ohio 44195, United States
  • ReVision Advanced Laser Eye Center
    Columbus, Ohio 43240, United States
  • OSU Department of Ophthalomogy
    Columbus, Ohio, United States
  • Dell Laser Consultants
    Austin, Texas, United States
  • Slade and Baker Vision Center
    Houston, Texas, United States
  • The Eye Institute of Utah
    Salt Lake City, Utah 84107, United States
09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Jun 29, 2022, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT01398852
Lead sponsor
Topcon Medical Systems, Inc.
Responsible party
Sponsor
First posted
Jul 21, 2011
Start date
Dec 2010
Primary completion
Jul 2012
Completion
Jul 2012
Results posted
Mar 4, 2013
Last update
Jun 29, 2022

Oversight

Data monitoring committee
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is terminated, as verified in Jun 2022. You cannot join it, but the record below documents what was studied.

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