Safety and Effectiveness of the PXL Platinum 330 System With Riboflavin Solution for Refractory Corneal Ulcers

Status unconfirmed · Phase 2/Phase 3 · Has a placebo group

Conditions studied: Keratitis, Corneal Ulcer

In brief

This study is being conducted to evaluate the safety and effectiveness of using the PXL Platinum 330 System with riboflavin solution for performing corneal collagen crosslinking (CXL) for the treatment of refractory corneal ulcers. The PXL Platinum 330 System is a combination product consisting of an ultraviolet-A (UV-A) 365 nm wavelength light source (PXL Platinum 330 Illumination System) and riboflavin (Peschke Riboflavin 0.25% Transepithelial Solution) administered in conjunction with the UV-A light as a photosensitizer. The PXL Platinum 330 System is intended to induce corneal collagen CXL to improve the biomechanical properties of the cornea by strengthening the corneal tissue in the anterior stroma. Corneal collagen CXL is performed by pretreating the cornea with riboflavin 0.25% ophthalmic solution beginning 40 min before UV-A light exposure to saturate the corneal tissue with the riboflavin photosensitizer. The cornea is then irradiated with UV-A light (365 nm) at an irradiance of 18 mW/cm2 (5 seconds on, 5 seconds off) for 10 min. Exposure of the cornea to this UV-A light regimen after topical administration of riboflavin (0.25%) has been shown to induce CXL of the corneal collagen fibrils, with a resultant increase in tensile strength and diameter of the collagen fibrils. Clinically, CXL has been shown to stabilize the corneal curvature in eyes with progressive keratoconus, with no significant change in the refractive index of the cornea. Numerous reports and a few clinical trials have also shown benefit in aiding resolution of infective corneal ulcers.

Key facts

Study ID

NCT05255016

Run by

Peschke GmbH

People needed

488

Starts

2022-03-14

Expected to finish

2024-02-24

Last updated by the study team

2022-10-28

Who can join

Age: 18 and older. Sex: any. Healthy volunteers: not accepted.

You may qualify if…

• 18 years of age or older
• Central corneal ulcer or hypopyon, and/or failure to improve within 24 hours of initiating conventional antibiotic eyedrops (eg, quinolone, polymyxin/trimethoprim, erythromycin, or other non-fortified antibiotics) or failure to completely re-epithelialisation within 1 week of initiating conventional antibiotic drops
• Consent to a corneal culture for bacterial keratitis (suspected keratitis is defined as a corneal epithelial defect of any size with an infiltration of the underlying stroma)
• Signed written informed consent
• Willingness and ability to comply with schedule for follow-up visits
• Minimum corneal thickness >300 μm

You may not qualify if…

• Presence of a perforated corneal ulcer
• Presence of a corneal ulcer that has produced a descemetocele
• Presence of a corneal ulcer deeper than 50% depth or 275 μm in the cornea
• Any active ocular infection other than the central corneal ulcer or hypopyon to be treated
• Suspicion of amoebic or viral keratitis requiring treatment with topical anti- amoebic or topical antiviral ophthalmic medications
• Previous ocular condition (other than refractive error) in the eye(s) to be treated that may predispose the eye(s) for future complications. This may include history of or active corneal disease (eg, herpes simplex, herpes zoster keratitis, recurrent erosion syndrome, acanthamoeba, etc.)
• Uncontrolled systemic disease, especially a collagen-vascular or rheumatologic condition that could contribute to the corneal condition
• Pregnancy (or plan to become pregnant) or lactation during the course of the study
• A known sensitivity to study medications

Where it is running

• Colorado Eye Consultants — Littleton, Colorado, United States (enrolling)
• Gorovoy M.D Eye Specialists — Fort Myers, Florida, United States (enrolling)
• Bay Area Eye Institute — Tampa, Florida, United States (enrolling)
• Price Vision Group — Indianapolis, Indiana, United States (enrolling)
• The cornea & Laser Eye Institute-NJ — Teaneck, New Jersey, United States (enrolling)
• SightMD — Babylon, New York, United States (enrolling)
• Prisma Health Opthalmology — Columbia, South Carolina, United States (enrolling)
• Woolfson Eye — Chattanooga, Tennessee, United States (enrolling)
• Houston Eye Associates — Houston, Texas, United States (enrolling)
• San Antonio Eye Center — Lackland Air Force Base, Texas, United States (enrolling)
• Milwaukee Eye Surgeons — Milwaukee, Wisconsin, United States (enrolling)
• Valley Eye — Oshkosh, Wisconsin, United States (enrolling)

Full record on ClinicalTrials.gov

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