IOP Reduction in Pigmentary Glaucoma Using DSLT

April 8, 2026 updated by: Mann Eye Institute

Direct Selective Laser Trabeculoplasty Providing Effective Intraocular Pressure Reduction in Pigmentary Glaucoma Patients

This study is a single-site, single-arm, prospective, observational study of IOP reduction after DSLT. Subjects will be assessed up to 12 months post-operatively. Clinical evaluations will include IOP and number of glaucoma medications.

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Recruiting

Conditions

Conditions

The disease, disorder, syndrome, illness, or injury that is being studied. On ClinicalTrials.gov, conditions may also include other health-related issues, such as lifespan, quality of life, and health risks.

Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.

Study Type

Study Type

Describes the nature of a clinical study. Study types include interventional studies (also called clinical trials), observational studies (including patient registries), and expanded access.
Observational

Enrollment (Estimated)

Enrollment

The number of participants in a clinical study. The "anticipated" enrollment is the target number of participants that the researchers need for the study.
45

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Contact

Study Contact

The name and contact information for the person who can answer enrollment questions for a clinical study. Each location where the study is being conducted may also have a specific contact, who may be better able to answer those questions.

Study Locations

  • United States
    • Texas
      • Houston, Texas, United States, 76134-2099
        • Recruiting
        • Mann Eye Institute
        • Contact:
        • Principal Investigator:
          • Alex Hacopian, MD

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Eligibility Criteria

The key requirements that people who want to participate in a clinical study must meet or the characteristics they must have. Eligibility criteria consist of both inclusion criteria (which are required for a person to participate in the study) and exclusion criteria (which prevent a person from participating). Types of eligibility criteria include whether a study accepts healthy volunteers, has age or age group requirements, or is limited by sex.

Ages Eligible for Study

  • Child
  • Adult
  • Older Adult

Accepts Healthy Volunteers

No

Sampling Method

Non-Probability Sample

Study Population

Eligible test subjects will be adult patients with pigmentary dispersion syndrome with elevated IOP or mild to moderate (based on AAO Preferred Practice Program criteria) pigmentary glaucoma with glaucomatous optic neuropathy and corresponding visual field/RNFL loss.

Description

Inclusion Criteria:

  • Adult patients with pigmentary dispersion syndrome with elevated IOP or mild to moderate (based on AAO Preferred Practice Program criteria) pigmentary glaucoma with glaucomatous optic neuropathy and corresponding visual field/RNFL loss.
  • Treatment naive, or washed out IOP ranging from ≥18-34 mmHg
  • Central corneal thickness (CCT) 480-600 µm
  • Able to complete medication washout and follow-up

Exclusion Criteria:

  • Prior incisional glaucoma surgery or glaucoma-related procedures in the study eye
  • Prior laser trabeculoplasty <3 years
  • Prior intraocular surgery and refractive surgery, except for cataract surgery unless greater than 2 years
  • Patients anticipating cataract surgery within the follow-up period
  • History of ocular inflammation and infection
  • All other secondary glaucoma including exfoliative
  • Patients unable to have DSLT treatment

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

What is the study measuring?

Primary Outcome Measures

Primary Outcome Measures

In a clinical study's protocol, the planned outcome measure that is the most important for evaluating the effect of an intervention/treatment. Most clinical studies have one primary outcome measure, but some have more than one.
Outcome Measure
Time Frame
Mean washed-out IOP change post-DSLT compared to washed-out baseline IOP
Time Frame: 6 months post-DSLT
6 months post-DSLT

Secondary Outcome Measures

Secondary Outcome Measures

In a clinical study's protocol, a planned outcome measure that is not as important as the primary outcome measure for evaluating the effect of an intervention but is still of interest. Most clinical studies have more than one secondary outcome measure.
Outcome Measure
Measure Description
Time Frame
Complete success: proportion of eyes with ≥ 20% washed out IOP reduction post-DSLT without secondary interventions (additional medications or procedures) compared with washed out baseline IOP
Time Frame: 6 months post-DSLT
6 months post-DSLT
Complete success: proportion of eyes with ≥ 20% washed out IOP reduction post-DSLT without secondary interventions (additional medications or procedures) compared with washed out baseline IOP
Time Frame: 12 months post-DSLT
12 months post-DSLT
Qualified success: proportion of eyes with IOP reduction (15-20%) without increase in baseline glaucoma medications
Time Frame: 6 months post-DSLT
6 months post-DSLT
Qualified success: proportion of eyes with IOP reduction (15-20%) without increase in baseline glaucoma medications
Time Frame: 12 months post-DSLT
12 months post-DSLT
Change in number of glaucoma medication(s)
Time Frame: 6 months post-DSLT
This applies to enrolled eyes already on medications, or to treatment-naive eyes experiencing an increase in medications after DSLT
6 months post-DSLT
Change in number of glaucoma medication(s)
Time Frame: 12 months post-DSLT
This applies to enrolled eyes already on medications, or to treatment-naive eyes experiencing an increase in medications after DSLT
12 months post-DSLT
Proportion of medication free eyes post-DSLT
Time Frame: 6 months post-DSLT
This applies to enrolled eyes already on medications, or to treatment-naive eyes experiencing an increase in medications after DSLT
6 months post-DSLT
Proportion of medication free eyes post-DSLT
Time Frame: 12 months post-DSLT
This applies to enrolled eyes already on medications, or to treatment-naive eyes experiencing an increase in medications after DSLT
12 months post-DSLT

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Sponsor

The organization or person who initiates the study and who has authority and control over the study.
Mann Eye Institute

Collaborators

Collaborators

An organization other than the sponsor that provides support for a clinical study. This support may include activities related to funding, design, implementation, data analysis, or reporting.
Sengi

Investigators

Investigators

A researcher involved in a clinical study. Related terms include site principal investigator, site sub-investigator, study chair, study director, and study principal investigator.
  • Principal Investigator: Alex Hacopian, MD, Mann Eye Institute

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

Study Start

The actual date on which the first participant was enrolled in a clinical study. The "anticipated" study start date is the date that the researchers think will be the study start date.
March 19, 2026

Primary Completion (Estimated)

Primary Completion

The date on which the last participant in a clinical study was examined or received an intervention to collect final data for the primary outcome measure. Whether the clinical study ended according to the protocol or was terminated does not affect this date. For clinical studies with more than one primary outcome measure with different completion dates, this term refers to the date on which data collection is completed for all the primary outcome measures. The "anticipated" primary completion date is the date that the researchers think will be the primary completion date for the study.
April 1, 2027

Study Completion (Estimated)

Study Completion

The date on which the last participant in a clinical study was examined or received an intervention/treatment to collect final data for the primary outcome measures, secondary outcome measures, and adverse events (that is, the last participant's last visit). The "anticipated" study completion date is the date that the researchers think will be the study completion date.
April 1, 2027

Study Registration Dates

First Submitted

First Submitted

The date on which the study sponsor or investigator first submitted a study record to ClinicalTrials.gov. There is typically a delay of a few days between the first submitted date and the record's availability on ClinicalTrials.gov (the first posted date).
November 20, 2025

First Submitted That Met QC Criteria

First Submitted That Met QC Criteria

The date on which the study sponsor or investigator first submits a study record that is consistent with National Library of Medicine (NLM) quality control (QC) review criteria. The sponsor or investigator may need to revise and submit a study record one or more times before NLM's QC review criteria are met. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
December 1, 2025

First Posted (Actual)

First Posted

The date on which the study record was first available on ClinicalTrials.gov after National Library of Medicine (NLM) quality control (QC) review has concluded. There is typically a delay of a few days between the date the study sponsor or investigator submitted the study record and the first posted date.
December 15, 2025

Study Record Updates

Last Update Posted (Actual)

Last Update Posted

The most recent date on which changes to a study record were made available on ClinicalTrials.gov. There may be a delay between when the changes were submitted to ClinicalTrials.gov by the study's sponsor or investigator (the last update submitted date) and the last update posted date.
April 9, 2026

Last Update Submitted That Met QC Criteria

Last Update Submitted That Met QC Criteria

The most recent date on which the study sponsor or investigator submitted changes to a study record that are consistent with National Library of Medicine (NLM) quality control (QC) review criteria. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
April 8, 2026

Last Verified

Last Verified

The most recent date on which the study sponsor or investigator confirmed the information about a clinical study on ClinicalTrials.gov as accurate and current. If a study with a recruitment status of recruiting; not yet recruiting; or active, not recruiting has not been confirmed within the past 2 years, the study's recruitment status is shown as unknown.
April 1, 2026

More Information

Terms related to this study

Other Study ID Numbers

Other Study ID Numbers

Identifiers or ID numbers other than the NCT number that are assigned to a clinical study by the study's sponsor, funders, or others. These numbers may include unique identifiers from other trial registries and National Institutes of Health grant numbers.
  • AH-25-01

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

NO

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

Yes

product manufactured in and exported from the U.S.

Yes

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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