Tear Interleukin Biomarkers After Glaucoma Treatment
TIGT
Tear Fluid Interleukin Biomarkers and Intraocular Pressure Response After Micropulse Transscleral Cyclophotocoagulation, Conventional Cyclophotocoagulation, and Antiglaucoma Surgery in Patients With Glaucoma
1 other identifier
interventional
24
1 country
1
Brief Summary
This prospective study aims to evaluate inflammatory biomarkers in tear fluid in patients with glaucoma undergoing micropulse transscleral cyclophotocoagulation (MP-CPC), continuous-wave cyclophotocoagulation (CPC), and antiglaucoma surgeries. The study will assess the concentrations of pro- and anti-inflammatory interleukins in tear samples collected before treatment, 5-7 days after the procedure, and 1 month postoperatively. Intraocular pressure (IOP) will be measured at the same time points. The correlation between changes in interleukin levels and IOP reduction will be analyzed. Additionally, the study aims to compare inflammatory response patterns among the MP-CPC, CPC, and surgical treatment groups and to identify interleukin profiles associated with a clinically significant hypotensive effect.
Trial Health
Trial Health Score
Automated assessment based on enrollment pace, timeline, and geographic reach
participants targeted
Target at below P25 for not_applicable
Started May 2026
Shorter than P25 for not_applicable
1 active site
Health score is calculated from publicly available data and should be used for screening purposes only.
Trial Relationships
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Study Timeline
Key milestones and dates
First Submitted
Initial submission to the registry
May 12, 2026
CompletedFirst Posted
Study publicly available on registry
May 18, 2026
CompletedStudy Start
First participant enrolled
May 18, 2026
CompletedPrimary Completion
Last participant's last visit for primary outcome
August 18, 2026
ExpectedStudy Completion
Last participant's last visit for all outcomes
August 18, 2026
May 18, 2026
May 1, 2026
3 months
May 12, 2026
May 12, 2026
Conditions
Keywords
Outcome Measures
Primary Outcomes (1)
Association Between Changes in Tear Fluid Interleukin Levels and Intraocular Pressure Reduction
This outcome will assess the association between changes in tear fluid interleukin concentrations and the reduction in intraocular pressure after glaucoma treatment. Tear fluid levels of selected interleukins, including IL-4 and IL-6, will be measured before treatment, 5-7 days after treatment, and 1 month postoperatively. Intraocular pressure will be measured at the same time points. Correlation and regression analyses will be performed to evaluate whether changes in interleukin levels are associated with the magnitude of intraocular pressure reduction.
Baseline, 5-7 days after treatment, and 1 month after treatment
Secondary Outcomes (3)
Change in Tear Fluid Interleukin Concentrations After Glaucoma Treatment
Baseline, 5-7 days after treatment, and 1 month after treatment
Comparison of Inflammatory Response Patterns Between Treatment Groups
Baseline, 5-7 days after treatment, and 1 month after treatment
Rate of Postoperative Complications
Up to 1 month after treatment
Study Arms (3)
MicroPulse Transscleral Cyclophotocoagulation Group
EXPERIMENTALParticipants in this group will undergo MicroPulse transscleral cyclophotocoagulation for the treatment of glaucoma. Tear samples and intraocular pressure measurements will be collected before treatment, 5-7 days after the procedure, and 1 month postoperatively to evaluate inflammatory biomarker changes and treatment response.
Conventional Transscleral Cyclophotocoagulation Group
ACTIVE COMPARATORParticipants in this group will undergo conventional continuous-wave transscleral cyclophotocoagulation for the treatment of glaucoma. Tear samples and intraocular pressure measurements will be collected before treatment, 5-7 days after the procedure, and 1 month postoperatively to evaluate inflammatory biomarker changes and treatment response.
Antiglaucoma Surgery Group
ACTIVE COMPARATORParticipants in this group will undergo incisional antiglaucoma surgery for the treatment of glaucoma. Tear samples and intraocular pressure measurements will be collected before surgery, 5-7 days after surgery, and 1 month postoperatively to evaluate inflammatory biomarker changes and treatment response.
Interventions
MicroPulse transscleral cyclophotocoagulation will be performed as a laser procedure for the treatment of glaucoma. The procedure will be applied transsclerally over the ciliary body using micropulse laser energy. Tear fluid samples will be collected before treatment, 5-7 days after the procedure, and 1 month postoperatively for assessment of interleukin levels. Intraocular pressure will be measured at the same time points.
Conventional continuous-wave transscleral cyclophotocoagulation will be performed as a laser procedure for the treatment of glaucoma. The procedure will be applied transsclerally over the ciliary body using continuous-wave laser energy. Tear fluid samples will be collected before treatment, 5-7 days after the procedure, and 1 month postoperatively for assessment of interleukin levels. Intraocular pressure will be measured at the same time points.
Incisional antiglaucoma surgery will be performed for the treatment of glaucoma according to the clinical indication and standard surgical protocol. Tear fluid samples will be collected before surgery, 5-7 days after surgery, and 1 month postoperatively for assessment of interleukin levels. Intraocular pressure will be measured at the same time points.
Eligibility Criteria
You may qualify if:
- Decision to treat by MP-CPC Laser
- Patients diagnosed with Glaucoma
- Patients aged 18 years old and above
- Glaucoma that is inadequately controlled on medical therapy
You may not qualify if:
- Patients age less than 18 years
- Patients unable or unwilling to provide informed consent to participate in the study
- Patients potentially unavailable for follow up visits
- Patients with significant scleral thinning
- Patients with ocular infection, inflammation or intraocular surgery in the study eye 2 months prior to enrollment in the study
- Albino patients that have no iris pigmentation
Contact the study team to confirm eligibility.
Sponsors & Collaborators
Study Sites (1)
Kazakh Eye Research Institute
Almaty, 050012, Kazakhstan
MeSH Terms
Conditions
Condition Hierarchy (Ancestors)
Study Officials
- PRINCIPAL INVESTIGATOR
Assiya Shaikenova, MD
Kazakh Eye Research Institute
Central Study Contacts
Study Design
- Study Type
- interventional
- Phase
- not applicable
- Allocation
- RANDOMIZED
- Masking
- NONE
- Purpose
- TREATMENT
- Intervention Model
- PARALLEL
- Sponsor Type
- NETWORK
- Responsible Party
- SPONSOR
Study Record Dates
First Submitted
May 12, 2026
First Posted
May 18, 2026
Study Start
May 18, 2026
Primary Completion (Estimated)
August 18, 2026
Study Completion (Estimated)
August 18, 2026
Last Updated
May 18, 2026
Record last verified: 2026-05
Data Sharing
- IPD Sharing
- Will not share