Ocular Hypertension GlaucomaNCT07589270
Direct Selective Laser Trabeculoplasty (DSLT) for Patients With Glaucoma or Ocular Hypertension Previously Treated With SLT
A study testing DSLT in people with Ocular Hypertension Glaucoma and POAG, run by The New York Eye Surgery Center at 1 site in United States.
Trial summary
This study looks at a new laser treatment for people with high eye pressure or a type of glaucoma called open-angle glaucoma. All patients in the study have already had a similar laser treatment before (called SLT). Read more about this study
- Who is it for?
- Ages 18 to 80 years
- Conditions the study is for
- Ocular Hypertension Glaucoma, POAG
- What is being tested?
- DSLT
- Type of treatment
- Medical device
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 60 participants
- Where
- 1 siteUnited States
- Study dates
- Apr 2026to Mar 2027
- Phase
- Interventional
- Are there results?
- Not yet: the study is under way
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 18 to 80 years
- All sexes
- No healthy volunteers
- Adult, Older adult
Who may be able to join
- • Adult patients (18-80 years old), scheduled to undergo DSLT treatment in one eye.
- Diagnosis of ocular hypertension (OHTN) or primary open angle glaucoma (POAG).
- Previous history of selective laser trabeculoplasty (SLT) treatment. • Medication free or washed out IOP at time 0 ranging from ≥ 18 through 32 mm Hg.
Who cannot join
- • Screened patients who were on IOP-lowering medications who did not successfully complete medication washout at the time of the procedure (time 0)
- Previous glaucoma surgeries/interventions:
- Patients who have undergone prior glaucoma-related procedures (e.g., trabeculectomy, laser trabeculoplasty, MIGS, or tube shunt).
- Recent SLT failures (within 6 months of initial treatment).
- Patients who have undergone cataract surgery within the prior 2 years.
- Secondary glaucoma:
- o Patients with secondary forms of glaucoma, such as angle-closure glaucoma, neovascular glaucoma, or glaucoma resulting from trauma or other systemic diseases.
- Other significant ocular conditions including advanced cataracts, retinal diseases (e.g., age-related macular degeneration), or any condition that might complicate the assessment of intraocular pressure (IOP) or visual function as deemed by the investigator.
Trial locations and contacts
1 site in 1 country. Contact the study team or a site near you to ask about taking part.
United States1 site
New York Eye Surgery Center
The Bronx, New York, 10469
About this study
Official title: Efficacy of Direct Selective Laser Trabeculoplasty (DSLT) for Reducing Intraocular Pressure in Ocular Hypertension or Open-Angle Glaucoma Patients Previously Treated With Selective Laser Trabeculoplasty (SLT)
This study looks at a new laser treatment for people with high eye pressure or a type of glaucoma called open-angle glaucoma. All patients in the study have already had a similar laser treatment before (called SLT). In this study, everyone will receive the same treatment, called Direct Selective Laser Trabeculoplasty (Voyager™ DSLT). This device is approved by the FDA and will be used as directed. The goal is to understand how safe it is and how well it works in these patients.
Glaucoma is a major cause of permanent vision loss. A common treatment, called SLT, uses a laser to help lower pressure inside the eye. The newer treatment, DSLT, works in a similar way but does not touch the eye, which may make it quicker and more comfortable. DSLT has worked well in patients who have never had laser treatment before, but there is not much information about how well it works in people who have already had SLT.
Read more
The main goal of this study is to see how much the treatment lowers eye pressure after 6 months, compared to before treatment. To get accurate results, patients will stop their usual glaucoma eye drops for a short time before their eye pressure is measured. This helps show the true effect of the laser treatment.
The study will also look at other outcomes. These include how much eye pressure drops in percentage terms, how many patients have successful results, and whether patients can reduce the number of glaucoma medications they use. It will also track if any patients need additional glaucoma treatments later.
Read the detailed description
This is a prospective, single-arm, interventional study designed to evaluate the safety and effectiveness of direct selective laser trabeculoplasty (DSLT) using the Voyager™ DSLT system in patients with ocular hypertension or primary open-angle glaucoma who have previously undergone selective laser trabeculoplasty (SLT).
DSLT is a non-contact laser procedure that delivers energy to the trabecular meshwork through the limbus without requiring a gonioscopy lens. The procedure in this study is standardized, consisting of 120 laser applications delivered over 360 degrees using a 400 µm spot size and fixed energy of 1.8 mJ, without titration. Treatment is performed in a single eye per participant.
To minimize the confounding effects of topical ocular hypotensive medications, participants using such therapies at screening will undergo a protocol-defined washout period prior to baseline intraocular pressure (IOP) assessment and treatment. Additional washout is required prior to the 6-month follow-up assessment to allow for evaluation of treatment effect independent of adjunctive pharmacologic therapy.
IOP is measured using Goldmann applanation tonometry at defined study visits. During follow-up, initiation of IOP-lowering medications is permitted based on investigator-defined target IOP thresholds and clinical judgment. Criteria for treatment escalation and definitions of treatment failure, including the need for secondary glaucoma procedures or ocular surgery that may affect IOP, are specified in the protocol.
This study specifically evaluates the performance of DSLT in a population with prior SLT exposure, for whom the magnitude and durability of response to repeat or alternative laser therapy are not well established. The study is intended to generate data on IOP control and safety outcomes in this clinically relevant subgroup under standardized treatment and follow-up conditions.
- Conditions
- Ocular Hypertension Glaucoma, POAG
- Being tested
- DSLT
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
DSLTDevice
Eligible participants will undergo the DSLT procedure: 120 shots, 400 µm spot size, 1.8mJ fixed energy (no titration) delivered at the limbus over 2.4 seconds
| Study group | Role | What they receive |
|---|---|---|
| DSLT Treatment | Experimental | Participants undergo direct selective laser trabeculoplasty (DSLT) in one eye using a fixed-energy protocol (120 shots, 400 µm spot size, 1.8 mJ, no titration). Intraocular pressure (IOP) is assessed at baseline (following medication washout) and during follow-up visits at 1 month, 3 months, and 6 months. A medication washout is required prior to baseline and the 6-month assessment. IOP-lowering medications may be introduced during follow-up based on investigator-defined thresholds. Receives: Device: DSLT |
What is being measured
The primary outcome is the main question the study is designed to answer.
Efficacy of Direct Selective Laser Trabeculoplasty (DSLT) for Reducing Intraocular Pressure in Ocular Hypertension or Open-Angle Glaucoma Patients Previously Treated with Selective Laser Trabeculoplasty (SLT)
IOP measured using Goldmann applanation tonometry. Washed-out IOP assessed at baseline prior to DSLT and at 6 months post-treatment following protocol-defined medication washout.
Measured: baseline through 6 months post DSLT treatment
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted15 May 2026
- Study startApr 2026 (estimated)
- Primary completionJan 2027 (estimated)
- Study completionMar 2027 (estimated)
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Publications (9)Papers the sponsor has linked to this study.
- Other trials for Ocular Hypertension GlaucomaStudies of the same condition, open and under way.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Interventional
- Phase
- Phase N/A
- Primary purpose
- Treatment
- Allocation
- Not applicable
- Intervention model
- Single group
- Model description
- VOYAGER DSLT
- Masking
- None (open label)
- Enrolment
- 60 participants (estimated)
Sponsor and investigators
- Lead sponsor
- The New York Eye Surgery Center
- Sponsor type
- University, hospital or other
- Responsible party
- Sponsor
- Investigators
- Nathan Radcliffe, M.D., Principal investigator, New York Eye Surgery Center
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT07589270
- Sponsor's protocol ID
- NMR-15213
- Status last verified
- May 2026
- First submitted
- 3 Apr 2026
- Last updated
- 15 May 2026
- Results posted
- No
- FDA-regulated drug
- No
- FDA-regulated device
- Yes
- Individual data sharing
- Yes: De-identified individual participant data (including intraocular pressure measurements and relevant study variables) will be made available to qualified researchers upon reasonable request
Publications
Hughes BA, Bacharach J, Craven ER, Kaback MB, Mallick S, Landry TA, Bergamini MV. A three-month, multicenter, double-masked study of the safety and efficacy of travoprost 0.004%/timolol 0.5% ophthalmic solution compared to travoprost 0.004% ophthalmic solution and timolol 0.5% dosed concomitantly in subjects with open angle glaucoma or ocular hypertension. J Glaucoma. 2005 Oct;14(5):392-9. doi: 10.1097/01.ijg.0000176935.08392.14.
PubMed 16148589Remo S, Roberto M. Staging Glaucoma Patient: Why and How?. Open Ophthalmol J, 2009; 3: http://dx.doi.org/10.2174/1874364100903010059
Supriya M Buraniya et al., Change in IOP after Selective Laser Trabeculoplasty in North Indian Primary Open Angle Glaucoam Patients: A Prospective Analytical Study. Journal of Clinical and Diagnostic Research. 2024 Nov, Vol-18(11): NC01-NC06
Racette L, Wilson MR, Zangwill LM, Weinreb RN, Sample PA. Primary open-angle glaucoma in blacks: a review. Surv Ophthalmol. 2003 May-Jun;48(3):295-313. doi: 10.1016/s0039-6257(03)00028-6.
PubMed 12745004Kass MA, Gordon MO, Gao F, Heuer DK, Higginbotham EJ, Johnson CA, Keltner JK, Miller JP, Parrish RK, Wilson MR; Ocular Hypertension Treatment Study Group. Delaying treatment of ocular hypertension: the ocular hypertension treatment study. Arch Ophthalmol. 2010 Mar;128(3):276-87. doi: 10.1001/archophthalmol.2010.20.
PubMed 20212196Mills RP, Budenz DL, Lee PP, Noecker RJ, Walt JG, Siegartel LR, Evans SJ, Doyle JJ. Categorizing the stage of glaucoma from pre-diagnosis to end-stage disease. Am J Ophthalmol. 2006 Jan;141(1):24-30. doi: 10.1016/j.ajo.2005.07.044.
PubMed 16386972Gazzard G, Konstantakopoulou E, Garway-Heath D, Adeleke M, Vickerstaff V, Ambler G, Hunter R, Bunce C, Nathwani N, Barton K; LiGHT Trial Study Group. Laser in Glaucoma and Ocular Hypertension (LiGHT) Trial: Six-Year Results of Primary Selective Laser Trabeculoplasty versus Eye Drops for the Treatment of Glaucoma and Ocular Hypertension. Ophthalmology. 2023 Feb;130(2):139-151. doi: 10.1016/j.ophtha.2022.09.009. Epub 2022 Sep 17.
PubMed 36122660Congdon N, Azuara-Blanco A, Solberg Y, Traverso CE, Iester M, Cutolo CA, Bagnis A, Aung T, Fudemberg SJ, Lindstrom R, Samuelson T, Singh K, Blumenthal EZ, Gazzard G; GLAUrious study group. Direct selective laser trabeculoplasty in open angle glaucoma study design: a multicentre, randomised, controlled, investigator-masked trial (GLAUrious). Br J Ophthalmol. 2023 Jan;107(1):62-65. doi: 10.1136/bjophthalmol-2021-319379. Epub 2021 Aug 25.
PubMed 34433548Goldenfeld M, Belkin M, Dobkin-Bekman M, Sacks Z, Blum Meirovitch S, Geffen N, Leshno A, Skaat A. Automated Direct Selective Laser Trabeculoplasty: First Prospective Clinical Trial. Transl Vis Sci Technol. 2021 Mar 1;10(3):5. doi: 10.1167/tvst.10.3.5.
PubMed 34003939
Study at a glance
From the registry record, last updated by the sponsor on 15 May 2026. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Efficacy of Direct Selective Laser Trabeculoplasty (DSLT) for Reducing Intraocular Pressure in Ocular Hypertension or Open-Angle Glaucoma Patients Previously Treated With Selective Laser Trabeculoplasty (SLT)
- ClinicalTrials.gov ID
- NCT07589270
- Acronym / sponsor ID
- NMR-15213
- Conditions
- Ocular Hypertension Glaucoma, POAG
- Study type
- Interventional
- Recruitment status
- Not yet recruiting
- Enrolment
- 60 participants (estimated)
- Lead sponsor
- The New York Eye Surgery CenterUniversity, hospital or other
- Study start
- Apr 2026 (estimated)
- Primary completion
- Jan 2027 (estimated)
- Study completion
- Mar 2027 (estimated)
- First posted
- 15 May 2026 (actual)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
This study looks at a new laser treatment for people with high eye pressure or a type of glaucoma called open-angle glaucoma. All patients in the study have already had a similar laser treatment before (called SLT). In this study, everyone will receive the same treatment, called Direct Selective Laser Trabeculoplasty (Voyager™ DSLT). This device is approved by the FDA and will be used as directed. The goal is to understand how safe it is and how well it works in these patients.
Glaucoma is a major cause of permanent vision loss. A common treatment, called SLT, uses a laser to help lower pressure inside the eye. The newer treatment, DSLT, works in a similar way but does not touch the eye, which may make it quicker and more comfortable. DSLT has worked well in patients who have never had laser treatment before, but there is not much information about how well it works in people who have already had SLT.
The main goal of this study is to see how much the treatment lowers eye pressure after 6 months, compared to before treatment. To get accurate results, patients will stop their usual glaucoma eye drops for a short time before their eye pressure is measured. This helps show the true effect of the laser treatment.
The study will also look at other outcomes. These include how much eye pressure drops in percentage terms, how many patients have successful results, and whether patients can reduce the number of glaucoma medications they use. It will also track if any patients need additional glaucoma treatments later.
Detailed description
This is a prospective, single-arm, interventional study designed to evaluate the safety and effectiveness of direct selective laser trabeculoplasty (DSLT) using the Voyager™ DSLT system in patients with ocular hypertension or primary open-angle glaucoma who have previously undergone selective laser trabeculoplasty (SLT).
DSLT is a non-contact laser procedure that delivers energy to the trabecular meshwork through the limbus without requiring a gonioscopy lens. The procedure in this study is standardized, consisting of 120 laser applications delivered over 360 degrees using a 400 µm spot size and fixed energy of 1.8 mJ, without titration. Treatment is performed in a single eye per participant.
To minimize the confounding effects of topical ocular hypotensive medications, participants using such therapies at screening will undergo a protocol-defined washout period prior to baseline intraocular pressure (IOP) assessment and treatment. Additional washout is required prior to the 6-month follow-up assessment to allow for evaluation of treatment effect independent of adjunctive pharmacologic therapy.
IOP is measured using Goldmann applanation tonometry at defined study visits. During follow-up, initiation of IOP-lowering medications is permitted based on investigator-defined target IOP thresholds and clinical judgment. Criteria for treatment escalation and definitions of treatment failure, including the need for secondary glaucoma procedures or ocular surgery that may affect IOP, are specified in the protocol.
This study specifically evaluates the performance of DSLT in a population with prior SLT exposure, for whom the magnitude and durability of response to repeat or alternative laser therapy are not well established. The study is intended to generate data on IOP control and safety outcomes in this clinically relevant subgroup under standardized treatment and follow-up conditions.
Study design
- Primary purpose
- Treatment
- Allocation
- Not applicable
- Intervention model
- Single group
- Masking
- None (open label)
- Number of arms
- 1
- Model description
- VOYAGER DSLT
| Arm | Type | Receives |
|---|---|---|
| DSLT Treatment | Experimental | Device: DSLTParticipants undergo direct selective laser trabeculoplasty (DSLT) in one eye using a fixed-energy protocol (120 shots, 400 µm spot size, 1.8 mJ, no titration). Intraocular pressure (IOP) is assessed at baseline (following medication washout) and during follow-up visits at 1 month, 3 months, and 6 months. A medication washout is required prior to baseline and the 6-month assessment. IOP-lowering medications may be introduced during follow-up based on investigator-defined thresholds. |
Who may qualify
- Ages
- 18 to 80 years
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Adult, Older adult
Key inclusion criteria (3 listed)
- • Adult patients (18-80 years old), scheduled to undergo DSLT treatment in one eye.
Key exclusion criteria (8 listed)
- • Screened patients who were on IOP-lowering medications who did not successfully complete medication washout at the time of the procedure (time 0)
- o Patients with secondary forms of glaucoma, such as angle-closure glaucoma, neovascular glaucoma, or glaucoma resulting from trauma or other systemic diseases.
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| DSLTEligible participants will undergo the DSLT procedure: 120 shots, 400 µm spot size, 1.8mJ fixed energy (no titration) delivered at the limbus over 2.4 seconds | Device | DSLT Treatment |
Primary outcome
Efficacy of Direct Selective Laser Trabeculoplasty (DSLT) for Reducing Intraocular Pressure in Ocular Hypertension or Open-Angle Glaucoma Patients Previously Treated with Selective Laser Trabeculoplasty (SLT)
Time frame: baseline through 6 months post DSLT treatment
IOP measured using Goldmann applanation tonometry. Washed-out IOP assessed at baseline prior to DSLT and at 6 months post-treatment following protocol-defined medication washout.
Results and safety
This study is still under way. Results are not available in the source record yet.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 15 May 2026.
- Background: PubMed 16148589Hughes BA, Bacharach J, Craven ER, Kaback MB, Mallick S, Landry TA, Bergamini MV. A three-month, multicenter, double-masked study of the safety and efficacy of travoprost 0.004%/timolol 0.5% ophthalmic solution compared to travoprost 0.004% ophthalmic solution and timolol 0.5% dosed concomitantly in subjects with open angle glaucoma or ocular hypertension. J Glaucoma. 2005 Oct;14(5):392-9. doi: 10.1097/01.ijg.0000176935.08392.14.
- BackgroundRemo S, Roberto M. Staging Glaucoma Patient: Why and How?. Open Ophthalmol J, 2009; 3: http://dx.doi.org/10.2174/1874364100903010059
- BackgroundSupriya M Buraniya et al., Change in IOP after Selective Laser Trabeculoplasty in North Indian Primary Open Angle Glaucoam Patients: A Prospective Analytical Study. Journal of Clinical and Diagnostic Research. 2024 Nov, Vol-18(11): NC01-NC06
- Background: PubMed 12745004Racette L, Wilson MR, Zangwill LM, Weinreb RN, Sample PA. Primary open-angle glaucoma in blacks: a review. Surv Ophthalmol. 2003 May-Jun;48(3):295-313. doi: 10.1016/s0039-6257(03)00028-6.
- Background: PubMed 20212196Kass MA, Gordon MO, Gao F, Heuer DK, Higginbotham EJ, Johnson CA, Keltner JK, Miller JP, Parrish RK, Wilson MR; Ocular Hypertension Treatment Study Group. Delaying treatment of ocular hypertension: the ocular hypertension treatment study. Arch Ophthalmol. 2010 Mar;128(3):276-87. doi: 10.1001/archophthalmol.2010.20.
- Background: PubMed 16386972Mills RP, Budenz DL, Lee PP, Noecker RJ, Walt JG, Siegartel LR, Evans SJ, Doyle JJ. Categorizing the stage of glaucoma from pre-diagnosis to end-stage disease. Am J Ophthalmol. 2006 Jan;141(1):24-30. doi: 10.1016/j.ajo.2005.07.044.
- Background: PubMed 36122660Gazzard G, Konstantakopoulou E, Garway-Heath D, Adeleke M, Vickerstaff V, Ambler G, Hunter R, Bunce C, Nathwani N, Barton K; LiGHT Trial Study Group. Laser in Glaucoma and Ocular Hypertension (LiGHT) Trial: Six-Year Results of Primary Selective Laser Trabeculoplasty versus Eye Drops for the Treatment of Glaucoma and Ocular Hypertension. Ophthalmology. 2023 Feb;130(2):139-151. doi: 10.1016/j.ophtha.2022.09.009. Epub 2022 Sep 17.
- Background: PubMed 34433548Congdon N, Azuara-Blanco A, Solberg Y, Traverso CE, Iester M, Cutolo CA, Bagnis A, Aung T, Fudemberg SJ, Lindstrom R, Samuelson T, Singh K, Blumenthal EZ, Gazzard G; GLAUrious study group. Direct selective laser trabeculoplasty in open angle glaucoma study design: a multicentre, randomised, controlled, investigator-masked trial (GLAUrious). Br J Ophthalmol. 2023 Jan;107(1):62-65. doi: 10.1136/bjophthalmol-2021-319379. Epub 2021 Aug 25.
- Background: PubMed 34003939Goldenfeld M, Belkin M, Dobkin-Bekman M, Sacks Z, Blum Meirovitch S, Geffen N, Leshno A, Skaat A. Automated Direct Selective Laser Trabeculoplasty: First Prospective Clinical Trial. Transl Vis Sci Technol. 2021 Mar 1;10(3):5. doi: 10.1167/tvst.10.3.5.
- Individual participant dataSharing planned: Yes. De-identified individual participant data (including intraocular pressure measurements and relevant study variables) will be made available to qualified researchers upon reasonable request
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part.
Nathan Radcliffe, M.D. principal investigator
New York Eye Surgery Center
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A study testing DSLT in people with Ocular Hypertension Glaucoma and POAG, run by The New York Eye Surgery Center at 1 site in United States.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 3 inclusion and 8 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: opening soon, as of the sponsor's last update on 15 May 2026. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 1 site in United States. Whether a site is taking part right now should be confirmed with that site. See every site.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
Are results available for this study?
This study is still under way. Results are not available in the source record yet.
How can a doctor refer a patient or contact the research team?
Contact Krystina Tavarez Feliciano, B.A (718-519-1000, krystinafeliciano23@gmail.com), or a site near the patient. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Efficacy of Direct Selective Laser Trabeculoplasty (DSLT) for Reducing Intraocular Pressure in Ocular Hypertension or Open-Angle Glaucoma Patients Previously Treated with Selective Laser Trabeculoplasty (SLT) (time frame: baseline through 6 months post DSLT treatment). It is what the study was designed to measure, not a finding.
Where can I read the original study information?
On the ClinicalTrials.gov record for NCT07589270, which also lists 9 linked publications.
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 15 May 2026.