Corneal De-epithelization Associated With a Therapeutic Photokeratectomy in Patients With Evolutive Keratoconus (KERADES)

Effect of Simple Corneal De-epithelization Associated With a Therapeutic Photokeratectomy in Patients With Evolutive Keratoconus

Keratoconus is a symmetrical, bilateral, non-inflammatory, idiopathic corneal pathology, characterized by a progressive corneal thinning. This disease leads to a bombing of the cornea, inducing a strong corneal astigmatism, responsible for a loss of visual acuity sometimes very important, non-correctable by lens of glasses. Collagen Cross-Linking (CXL) and simple corneal de-epithelization are two common surgical technics aiming to slow the progression of this pathology. They consist in rigidifying the corneal structure in order to stabilize its deformation progression. Even though these technics are commonly performed, none of these strategies has proven their efficiency. The effects of CXL can be due to the superficial scarring reaction as well as the effects of corneal remodeling induced by the de-epithelization phase during a CXL procedure, and not due to the covalent links between collagen and fibrils, formed by the biochemical reaction resulting from the UV-A exposition in the presence of Riboflavine De-epithelization may be an equally effective treatment, when compared to CXL, but without long term secondary effects. Its association with a therapeutic photokeratectomy (PKT, surgical technic used to regulate the corneal surface, and eliminate its opacities in order to recuperate the transparency of the cornea) will aim to improve the regularity of the anterior corneal surface, thus allowing a better epithelial attachment (adhesion) and may allow a stromal inflammatory reaction, favorable to the improvement of corneal biomechanics. PKT is a reliable technic; however it has not yet proven its efficiency in the treatment of keratoconus.

The purpose of this study is to describe the effects of de-epithelization associated with a therapeutic photokeratectomy in patients with evolutive keratoconus, by showing the proportion of patients who lost the evolutivity of their keratoconus, after 6 months and 1 year, after an intervention of de-epithelization associated with therapeutic photokeratectomy.

Study Overview

Status

Terminated

Conditions

Study Type

Interventional

Enrollment (Actual)

20

Phase

  • Not Applicable

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

      • Paris, France, 75019
        • Fondation Ophtalmologique Adolphe de Rothschild

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

13 years to 43 years (Child, Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Description

Inclusion Criteria:

  • Patients aged from 15 to 45 years old
  • Patients with an evolutive keratoconus
  • Planned intervention (de-epithelization and photokeratectomy)

Exclusion Criteria:

  • Contra-indication to de-epithelization (active scarring corneal lesion)
  • Pregnant women and breastfeeding
  • Absence of the written consent to participate in the trial

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: N/A
  • Interventional Model: Single Group Assignment
  • Masking: None (Open Label)

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Experimental: Evolutive keratoconus

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Evolutivity of keratoconus (Proportion of patients who lost the evolutivity of their keratoconus)
Time Frame: 6 months
Effects of de-epithelization associated with a therapeutic photokeratectomy in patients with evolutive keratoconus, by showing the proportion of patients who lost the evolutivity of their keratoconus, after 6 months
6 months

Collaborators and Investigators

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

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 (Actual)

October 13, 2015

Primary Completion (Actual)

February 7, 2019

Study Completion (Actual)

February 7, 2019

Study Registration Dates

First Submitted

August 3, 2016

First Submitted That Met QC Criteria

August 4, 2016

First Posted (Estimate)

August 5, 2016

Study Record Updates

Last Update Posted (Actual)

June 11, 2019

Last Update Submitted That Met QC Criteria

June 7, 2019

Last Verified

June 1, 2019

More Information

Terms related to this study

Additional Relevant MeSH Terms

Other Study ID Numbers

  • ASD_2014-12

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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