Single Dose Study of Phentolamine Mesylate Eye Drops in Patients With Severe Night Vision Disturbances
Public ClinicalTrials.gov record NCT04004507. 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.
Brief summary
Reproduced verbatim from the official ClinicalTrials.gov record. Not medical advice.
The objectives of this study are: * To assess the effect of ophthalmic phentolamine mesylate in mesopic conditions on the four endpoints: 1. Contrast sensitivity 2. Low contrast visual acuity 3. Wavefront aberrometry 4. Subjective questionnaire * To assess the safety of ophthalmic phentolamine mesylate
Study identification
- NCT ID
- NCT04004507
- Recruitment status
- Completed
- Study type
- Interventional
- Phase
- Phase 2
- Enrollment
- 24 participants
Conditions and interventions
Interventions
- Phentolamine Mesylate Ophthalmic Solution 1% Drug
- Phentolamine Mesylate Ophthalmic Solution Vehicle (Placebo) Other
Drug · Other
Eligibility (public fields only)
- Age range
- 18 Years to 80 Years
- 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 2007 (Actual)
- Primary completion
- Oct 2007 (Actual)
- Completion
- Feb 2008 (Actual)
- Last update posted
- Feb 15, 2024
2007 – 2008
United States locations
- U.S. sites
- 1
- U.S. states
- 1
- U.S. cities
- 1
| Facility | City | State | ZIP | Site status |
|---|---|---|---|---|
| Ophthalmic Consultants of Long Island, NY | Lynbrook | New York | 11563 | — |
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 NCT04004507, 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 15, 2024 · Synced Oct 21, 2026
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Open the official record
The complete public registry record, listed eligibility criteria, and available contact information for NCT04004507 live on ClinicalTrials.gov.