Non-inferiority Trial of Iontophoretic Corneal Collagen Crosslinking (CXL) Compared to Standard Corneal Collagen Crosslinking in Progressive Keratoconus.
NCT ID: NCT01868620
Last Updated: 2019-07-16
Study Results
The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.
Basic Information
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TERMINATED
NA
28 participants
INTERVENTIONAL
2013-05-31
2017-03-31
Brief Summary
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Corneal collagen crosslinking (CXL) is the first surgical procedure that appears to halt the progression of keratoconus. In the current standard CXL, the central corneal epithelium must be debrided to efficiently permeate the corneal stroma with riboflavin. The epithelium debridement can cause severe pain, infection and stromal haze. The study hypothesis is that iontophorese CXL is as effective as standard CXL to stabilize a progressive keratoconus.
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Detailed Description
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In the current standard CXL, the central corneal epithelium must be debrided to allow the penetration of riboflavin into the cornea with a risk of side effects, such as pain for the first two post-operative days, temporary loss of visual acuity during the first three months, and serious complications such as infection and stromal opacity due to corneal scarring.
Iontophoresis is a non invasive technique in which a weak electric current is used to enhance the penetration of riboflavin into the cornea. The iontophoresis technique could allow intrastromal riboflavin diffusion, while keeping the corneal epithelium on, combining the efficiency of the standard procedure without the side effects of epithelial debridement.
Conditions
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Study Design
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RANDOMIZED
PARALLEL
TREATMENT
NONE
Study Groups
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Iontophoretic CXL
The iontophoretic CXL involves a constant current source and two electrodes. The main electrode is a circular cup, with a surrounding annular suction ring to affix the device on the cornea during the procedure. The electrode itself is a stainless steel grid, placed into the cup at a minimal distance from the cornea. The reservoir is filled with riboflavin solution. The generator applies a constant current of 1mA for a preset period of 5 min. After the riboflavin administration by iontophoresis, the cornea is irradiated by a UVA light for 3mW/cm2 during 30 minutes.
Iontophoretic CXL
Standard CXL
In the standard CXL, the epithelium is mechanically removed. Then, a solution of riboflavin is instilled each minute for 30 minutes. Corneas are irradiated by a UVA light for 3mW/cm2 during 30 minutes.
Standard CXL
Interventions
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Iontophoretic CXL
Standard CXL
Eligibility Criteria
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Inclusion Criteria
* Corneal thickness ≥ 400 µm
* Progressive stage 1 to 3 keratoconus (Krumeich classification)
Exclusion Criteria
* Stage 4 keratoconus (Krumeich classification)
* Concomitant corneal disease
* History of corneal surgery
18 Years
ALL
No
Sponsors
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Sooft Italia
INDUSTRY
Centre de Référence National du Kératocône
OTHER
University Hospital, Toulouse
OTHER
Responsible Party
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Principal Investigators
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François MALECAZE, MD, PhD
Role: PRINCIPAL_INVESTIGATOR
Locations
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University Hospital Toulouse
Toulouse, Midi-Pyrenees, France
Countries
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References
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Other Identifiers
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HAO
Identifier Type: OTHER
Identifier Source: secondary_id
13 030 03
Identifier Type: -
Identifier Source: org_study_id
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