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RecruitingNCT04787471Updated Sep 17, 2026

Corneal Crosslinking for Treatment of Corneal Neovascularization

A Phase 2/3 interventional study of 30 minute photoactivation of riboflavin 0.1% and 10 minute photoactivation of riboflavin 0.1% in Corneal Neovascularization, sponsored by Price Vision Group. Recruiting at 1 site in United States. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2026-09-17.

Sponsored by Price Vision Group · Phase 2/3, Interventional, and Treatment

From the registry’s dates

  • Started May 2021; still recruiting 5 years 5 months later.
Phase
Phase 2/3
Study type
Interventional
Enrollment
138
Allocation
Randomized
Ages
18 Years and older
Sex
All
01

Study summary

The study objective is to assess safety and efficacy of photo-activation of riboflavin for treatment of corneal neovascularization with or without concomitant inflammation and/or infection.

02

Conditions studied

  • Corneal Neovascularization
03

In context

Corneal Neovascularization

27 studies on the registry are indexed under Corneal Neovascularization; 4 are open to participants now.

This study's planned enrollment of 138 is above the median of 24 across 22 interventional studies indexed under Corneal Neovascularization.

Browse Corneal Neovascularization studies →

Lead sponsor

Price Vision Group is the lead sponsor of 11 studies on the registry; 2 are open to participants now.

Of its 5 completed or terminated interventional studies of FDA-regulated products, 4 (80%) have results posted.

Counted across the registry records on this site, refreshed daily.

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Who can participate

Ages eligible
18 Years and older
Sexes eligible
All
Accepts healthy volunteers
No

Inclusion criteria

  • 18 years of age or older
  • With active inflammation or infection causing vascularization and possibly melting of the cornea, or vessels extending into the cornea causing lipid deposition, or vascularization that could significantly increase the risk of rejection of a current or planned corneal transplant, or vessels that continue to extend into the cornea despite topical treatment with corticosteroids.
  • Signed written informed consent.

Exclusion criteria

Exclusion Criteria:

  • Known sensitivity to treatment medications
  • Current condition that in the investigator's opinion could compromise safety or data integrity.
  • Pregnancy (including plan to become pregnant) or lactation during the course of the study
05

Study design

Phase
Phase 2 / Phase 3
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Single (Outcomes assessor)
Enrollment
138 participants (estimated)

Study arms

  • Active comparator
    30 minute photoactivation

    photoactivation of riboflavin 0.1% using 365-nm UV light, 3mW/cm2 for 30 minutes

    Combination Product: 30 minute photoactivation of riboflavin 0.1%

  • Active comparator
    10 minute photoactivation

    photoactivation of riboflavin 0.1% using 365-nm UV light, 9mW/cm2 for 10 minutes

    Combination Product: 10 minute photoactivation of riboflavin 0.1%

Interventions

  • Combination product30 minute photoactivation of riboflavin 0.1%

    Use of riboflavin 0.1% eye drops and 3mW/cm2 UVA light for 30 minutes

  • Combination product10 minute photoactivation of riboflavin 0.1%

    Use of riboflavin 0.1% eye drops and 9mW/cm2 UVA light for 10 minutes

06

What researchers measure

Primary outcomes

  1. corneal neovascularization as a proportion of the total corneal area

    the cornea will be photographed and morphometric image analysis software will be used to measure corneal neovascularization as a proportion of the total corneal area. The proportion measured at baseline will be compared with the proportion measured at 6 months after treatment.

    Time frame: 6 months

07

Study locations

1 of 1 sites recruiting
  • Price Vision Group
    Indianapolis, Indiana 46260, United States
    • Marianne Price, PhD · Contact · mprice@cornea.org · 317-814-2990
    • Francis Price, Jr., MD · Principal investigator
    • Matthew Feng, MD · Sub investigator
    Recruiting
08

References and documents

Publications

  • Hersh PS, Stulting RD, Muller D, Durrie DS, Rajpal RK; U.S. Crosslinking Study Group. U.S. Multicenter Clinical Trial of Corneal Collagen Crosslinking for Treatment of Corneal Ectasia after Refractive Surgery. Ophthalmology. 2017 Oct;124(10):1475-1484. doi: 10.1016/j.ophtha.2017.05.036. Epub 2017 Jun 24. PubMed 28655538 ↗
  • Hersh PS, Stulting RD, Muller D, Durrie DS, Rajpal RK; United States Crosslinking Study Group. United States Multicenter Clinical Trial of Corneal Collagen Crosslinking for Keratoconus Treatment. Ophthalmology. 2017 Sep;124(9):1259-1270. doi: 10.1016/j.ophtha.2017.03.052. Epub 2017 May 7. PubMed 28495149 ↗
  • Price MO, Fairchild K, Feng MT, Price FW Jr. Prospective Randomized Trial of Corneal Cross-linking Riboflavin Dosing Frequencies for Treatment of Keratoconus and Corneal Ectasia. Ophthalmology. 2018 Apr;125(4):505-511. doi: 10.1016/j.ophtha.2017.10.034. Epub 2017 Dec 2. PubMed 29203068 ↗
  • Price MO, Tenkman LR, Schrier A, Fairchild KM, Trokel SL, Price FW Jr. Photoactivated riboflavin treatment of infectious keratitis using collagen cross-linking technology. J Refract Surg. 2012 Oct;28(10):706-13. doi: 10.3928/1081597X-20120921-06. PubMed 23062001 ↗
  • Schaub F, Hou Y, Zhang W, Bock F, Hos D, Cursiefen C. Corneal Crosslinking to Regress Pathologic Corneal Neovascularization Before High-Risk Keratoplasty. Cornea. 2021 Feb 1;40(2):147-155. doi: 10.1097/ICO.0000000000002406. PubMed 33395116 ↗
  • Price FW Jr, Tefasse Z, Frances KD, Feng MT, Gang A, Price MO. Assessment of Corneal Crosslinking for the Treatment of Corneal Neovascularization With and Without Associated Infection. Cornea. 2026 Apr 1;45(4):450-456. doi: 10.1097/ICO.0000000000003869. Epub 2025 Apr 2. PubMed 40172865 ↗

Individual participant data

Plan to share: No

09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Sep 17, 2026, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
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Registry details

Key details

Study ID
NCT04787471
Lead sponsor
Price Vision Group
Collaborators
Cornea Research Foundation of America
Responsible party
Sponsor
First posted
Mar 8, 2021
Start date
May 3, 2021
Primary completion
Jul 15, 2029 (estimated)
Completion
Sep 15, 2029 (estimated)
Last update
Sep 17, 2026

Study contacts

Marianne Price, PhD
Contact
mprice@cornea.org
317-814-2990
Francis W Price, Jr., MD
principal investigator · Price Vision Group

Oversight

Data monitoring committee
Yes
FDA-regulated drug
Yes
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

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