The Safety and Efficacy of Phentolamine Mesylate Ophthalmic Solution in Subjects With Severe Night Vision Disturbances
Public ClinicalTrials.gov record NCT01703559. 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
Double-Masked Parallel Evaluation of the Safety and Efficacy of Phentolamine Mesylate Ophthalmic Solution in Subjects With Severe Night Vision Disturbances
Brief summary
Reproduced verbatim from the official ClinicalTrials.gov record. Not medical advice.
The objectives of this study are: * To evaluate the efficacy of phentolamine mesylate 0.5% and 1.0% ophthalmic solution (Nyxol) in the treatment of night vision complaints, including reduced contrast sensitivity * To evaluate the ocular and systemic safety of phentolamine mesylate 0.5% and 1.0% ophthalmic solution (Nyxol) compared to its vehicle, a sterile, isotonic, buffered aqueous solution containing mannitol and sodium acetate
Study identification
- NCT ID
- NCT01703559
- Recruitment status
- Completed
- Study type
- Interventional
- Phase
- Phase 2
- Enrollment
- 60 participants
Conditions and interventions
Interventions
- Phentolamine Mesylate Ophthalmic Solution 1.0% Drug
- Phentolamine Mesylate Ophthalmic Solution 0.5% Drug
- Phentolamine Mesylate Ophthalmic Solution Vehicle (Placebo) Other
Drug · Other
Eligibility (public fields only)
- Age range
- 18 Years to 45 Years
- Sex
- All
- Healthy volunteers
- Accepts healthy volunteers
This page does not interpret eligibility. Detailed inclusion and exclusion criteria are on the official ClinicalTrials.gov record.
Study timeline
- Start date
- Sep 9, 2011 (Actual)
- Primary completion
- Apr 16, 2012 (Actual)
- Completion
- Apr 30, 2012 (Actual)
- Last update posted
- Oct 8, 2026
2011 – 2012
United States locations
- U.S. sites
- 1
- U.S. states
- 1
- U.S. cities
- 1
| Facility | City | State | ZIP | Site status |
|---|---|---|---|---|
| Celerion | Phoenix | Arizona | 67230 | — |
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 NCT01703559, 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 Oct 8, 2026 · Synced Oct 20, 2026
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Open the official record
The complete public registry record, listed eligibility criteria, and available contact information for NCT01703559 live on ClinicalTrials.gov.