Corneal Cross Linking and Topography Guided Excimer Laser Treatment

April 25, 2017 updated by: Gerald Schmidinger, Medical University of Vienna

Topography Guided Excimer Laser Surface Ablation in Combination With Corneal Cross-linking (CCL) in Patients With Progressive Ectatic Corneal Disorders.

Topography guided laser treatment enables the surgeon to correct higher order aberrations in corneas with irregular astigmatism. Several case reports and small uncontrolled trials have been published on the combination of this treatment with corneal cross linking (CCL) in patients with ectatic corneal diseases.

This randomized study will evaluate the safety and efficacy of a combined treatment of corneal cross linking with a partial topography guided excimer laser treatment in eyes with progressive ectatic corneal diseases.

Study Overview

Status

Terminated

Conditions

Intervention / Treatment

Study Type

Interventional

Enrollment (Actual)

30

Phase

  • Phase 3

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • Austria
      • Vienna, Austria, 1090
        • Medical University of Vienna, Department of Ophthalmology

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

18 years to 40 years (Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Description

Inclusion Criteria:

  • Signed informed consent
  • Patient age 18 - 40 years
  • Documented progressive corneal ectatic disease except post LASIK/LASEK ectasia

Exclusion Criteria:

  • Allergy to one of the used substances
  • Tendency towards excessive scar formation
  • Pregnancy
  • Rheumatic diseases
  • Central corneal thickness below 450 µm
  • Active infection of the study eye
  • Previous corneal surgery of the study eye

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Treatment
  • Allocation: Randomized
  • Interventional Model: Parallel Assignment
  • Masking: None (Open Label)

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Active Comparator: Corneal Cross Linking
Patients will receive a standard corneal cross linking treatment
Other: Corneal Cross Linking
A standard corneal cross linking procedure will be performed in this arm.
Experimental: Corneal Cross Linking and Topo Laser
Patients will receive a topography guided laser treatment in combination with a standard corneal cross linking treatment in the same session.
Other: Topography guided Excimer Laser treatment and Corneal Cross Linking
A topography guided excimer laser treatment will be performed prior to CCL in one session.

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Time Frame
Safety (Pachymetry, K-readings)
Time Frame: 1 year
1 year
uncorrected visual acuity (UVCA)
Time Frame: 1 year
1 year
best corrected visual acuity (BCVA)
Time Frame: 1 year
1 year

Secondary Outcome Measures

Outcome Measure
Time Frame
Progression of ectatic disease (by use of maximum keratometry readings = Kmax)
Time Frame: 1 year
1 year

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Medical University of Vienna

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start

January 1, 2010

Primary Completion (Actual)

December 1, 2015

Study Completion (Actual)

December 1, 2015

Study Registration Dates

First Submitted

November 5, 2011

First Submitted That Met QC Criteria

September 6, 2012

First Posted (Estimate)

September 11, 2012

Study Record Updates

Last Update Posted (Actual)

April 26, 2017

Last Update Submitted That Met QC Criteria

April 25, 2017

Last Verified

April 1, 2017

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

  • 367/2009

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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