Higher Irradiance in Keratoconus Ectasia
Public ClinicalTrials.gov record NCT01789333. Field values are reproduced from the official study page; the official ClinicalTrials.gov record remains the source of truth for eligibility, enrollment, and contact information.
Data is sourced from official ClinicalTrials.gov public API records. Always review the official ClinicalTrials.gov record for the latest information.
Official title
Study of the Safety and Effectiveness of Photochemically Induced Collagen Cross- Linking at Higher Irradiances in Patients With Keratoconus or Ectasia
Study identification
- NCT ID
- NCT01789333
- Recruitment status
- Withdrawn
- Study type
- Interventional
- Phase
- Not applicable
- Lead sponsor
- Stephen Trokel
- Other
- Enrollment
- Not listed
Conditions and interventions
Conditions
Interventions
- UVA Light with irradiance exposure of 9 mW/cm2 Device
- Riboflavin 0.1% ophthalmic solution Drug
Device · Drug
Eligibility (public fields only)
- Age range
- 16 Years and older
- Sex
- All
- Healthy volunteers
- Healthy volunteers not accepted
This page does not interpret eligibility. Detailed inclusion and exclusion criteria are on the official ClinicalTrials.gov record.
Study timeline
- Start date
- Aug 31, 2010
- Primary completion
- Dec 29, 2022
- Completion
- Dec 29, 2022
- Last update posted
- Feb 8, 2023
2010 – 2022
United States locations
- U.S. sites
- 1
- U.S. states
- 1
- U.S. cities
- 1
| Facility | City | State | ZIP | Site status |
|---|---|---|---|---|
| Edward Harkness Eye Institute-Columbia University Medical Center | New York | New York | 10032 | — |
Site contact phone numbers, emails, and investigator names are intentionally not displayed here. Open the official ClinicalTrials.gov record for site contact information.
About this trial record page
- What this page shows
- Public field values for ClinicalTrials.gov record NCT01789333, including study identification, conditions, interventions, eligibility (age, sex, healthy volunteer), timeline, and U.S. site list.
- What this page does not do
- No medical advice, eligibility judgments, treatment recommendations, study quality scoring, or AI-generated medical summaries. No site contact phone numbers, emails, or investigator names.
- Where the data comes from
- Sourced from the official ClinicalTrials.gov public API. The official record is the source of truth.
- Last refresh
- Last update posted Feb 8, 2023 · Synced Jul 23, 2026
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Open the official record
The complete protocol, eligibility criteria, and contact information for NCT01789333 live on ClinicalTrials.gov.