Collagen Cross-Linking With Ultraviolet-A in Asymmetric Corneas

NCT ID: NCT03029104

Last Updated: 2022-01-12

Study Results

Results available

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Basic Information

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Recruitment Status

TERMINATED

Clinical Phase

PHASE2

Total Enrollment

2228 participants

Study Classification

INTERVENTIONAL

Study Start Date

2016-12-21

Study Completion Date

2020-12-27

Brief Summary

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This study will assess changes in visual acuity and corneal symmetry after corneal collagen cross-linking (CXL) of asymmetric corneas.

Detailed Description

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This study will evaluate the results of Corneal Collagen Crosslinking (CXL) in patients with conditions that include keratoconus, forme fruste keratoconus, post-LASIK ectasia, pellucid marginal degeneration, forme fruste pellucid marginal degeneration, diurnal fluctuation post-radial keratotomy, or Terrien's marginal degeneration. This is an outcomes study, all patients receive treatment.

Conditions

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Keratoconus Corneal Diseases Eye Diseases Photosensitizing Agents

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Primary Study Purpose

TREATMENT

Blinding Strategy

SINGLE

Outcome Assessors
Visual acuity will be evaluated by an observer who is masked as to the treatment protocol to which study subjects have been assigned.

Study Groups

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Group 1

Ultraviolet-A (UVA)-induced cross-linking of corneal collagen (CXL) using CXLO Corneal Strengthening Solution and a UVA irradiance of 4 mW/cm2 cycled On/Off at 15 second intervals for 20 minutes.

Group Type ACTIVE_COMPARATOR

CXLO Corneal Strengthening Solution and UVA Illumination Device

Intervention Type COMBINATION_PRODUCT

CXLO Corneal Strengthening Solution

Group 2

Ultraviolet-A (UVA)-induced cross-linking of corneal collagen (CXL) using CXLO Corneal Strengthening Solution and a UVA irradiance of 6 mW/cm2 cycled On/Off at 15 second intervals for 20 minutes.

Group Type ACTIVE_COMPARATOR

CXLO Corneal Strengthening Solution and UVA Illumination Device

Intervention Type COMBINATION_PRODUCT

CXLO Corneal Strengthening Solution

Group 3

Ultraviolet-A (UVA)-induced cross-linking of corneal collagen (CXL) using CXLO Corneal Strengthening Solution and a UVA irradiance of 4 mW/cm2 cycled On/Off at 15 second intervals for 30 minutes.

Group Type ACTIVE_COMPARATOR

CXLO Corneal Strengthening Solution and UVA Illumination Device

Intervention Type COMBINATION_PRODUCT

CXLO Corneal Strengthening Solution

Interventions

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CXLO Corneal Strengthening Solution and UVA Illumination Device

CXLO Corneal Strengthening Solution

Intervention Type COMBINATION_PRODUCT

Eligibility Criteria

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Inclusion Criteria

* A diagnosis of at least one of the following conditions:

1. Keratoconus
2. Forme fruste keratoconus
3. Post-LASIK ectasia
4. Pellucid marginal degeneration
5. Forme fruste pellucid marginal degeneration
6. Diurnal fluctuation post-radial keratotomy
7. Terrien's marginal degeneration

Exclusion Criteria

1. Corneal thickness \< 375 microns measured by ultrasound or Pentacam.
2. Contraindications or hypersensitivities to any study medications or their components.
3. Pregnancy or breastfeeding.
4. Any history of herpes simplex corneal disease in an eye to be treated.
5. Nystagmus or any other condition that would, in the judgement of the investigator, prevent a steady gaze during the treatment.
6. Inability to cooperate with diagnostic tests.
7. Enrollment in another ophthalmic clinical trial.
Minimum Eligible Age

8 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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Cxlusa

INDUSTRY

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Principal Investigators

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Gregg J Berdy, MD, FACS

Role: PRINCIPAL_INVESTIGATOR

Ophthalmology Associates, St. Louis, MO

Locations

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Schwartz Laser Eye Center

Scottsdale, Arizona, United States

Site Status

Goodman Eye Center

San Francisco, California, United States

Site Status

Cornea Consultants of Colorado

Littleton, Colorado, United States

Site Status

Woolfson Eye Institute

Atlanta, Georgia, United States

Site Status

Chicago Cornea Consultants

Chicago, Illinois, United States

Site Status

Chicago Cornea Consultants, Ltd.

Hoffman Estates, Illinois, United States

Site Status

Ophthalmology Associates

St Louis, Missouri, United States

Site Status

Cleveland Eye Clinic

Brecksville, Ohio, United States

Site Status

Cornea Associates of Texas

Dallas, Texas, United States

Site Status

Countries

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United States

References

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Epstein RJ, Belin MW, Gravemann D, Littner R, Rubinfeld RS. EpiSmart Crosslinking for Keratoconus: A Phase 2 Study. Cornea. 2023 Jul 1;42(7):858-866. doi: 10.1097/ICO.0000000000003136. Epub 2022 Sep 28.

Reference Type DERIVED
PMID: 36173242 (View on PubMed)

Provided Documents

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Document Type: Study Protocol

View Document

Document Type: Statistical Analysis Plan

View Document

Other Identifiers

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CXL-005

Identifier Type: -

Identifier Source: org_study_id

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