| Not Yet Recruiting | Glaucoma Drop Aids Part 2 NCT06806332 | Boston Medical Center | N/A |
| Recruiting | The Effect of Graded Forced Expiration on Intraocular Pressure NCT07274176 | Uşak University | N/A |
| Completed | Upper Extremity Position and Intraocular Pressure During Spinal Anesthesia NCT07424417 | Elazıg Fethi Sekin Sehir Hastanesi | N/A |
| Completed | Clinical Validation of iCare IC1000 Tonometer NCT06748092 | Icare Finland Oy | N/A |
| Completed | EFFECT OF INTRAARTICULAR TRIAMCINOLONE HEXACETONIDE AND BETAMETHASONE ON INTRAOCULAR PRESSURE NCT07242846 | Nigde Omer Halisdemir University | Phase 4 |
| Completed | Quick Measure Study for iCare ST500 and iCare IC200 NCT07156630 | Icare Finland Oy | N/A |
| Not Yet Recruiting | Measurement of Intraocular Pressure in Patients Undergoing Laminectomy in the Prone Position NCT07067008 | Elazıg Fethi Sekin Sehir Hastanesi | — |
| Completed | Intraocular Pressure in Laparoscopic Inguinal Hernia Repair NCT07337603 | Saglik Bilimleri Universitesi | — |
| Completed | iCare IC1000 Alignment Study NCT07022054 | Icare Finland Oy | N/A |
| Completed | 24-hour Wear Performance and Safety Study of Smartlens miLens Contact Lens for IOP Monitoring NCT06689696 | Smartlens, Inc. | — |
| Completed | Intraocular Pressure, Optic Nerve Sheath Diameter and Optic Perfusion Pressure of Minimal Low and High-Flow An NCT06684704 | Elazıg Fethi Sekin Sehir Hastanesi | N/A |
| Recruiting | Evaluation of Intraocular Pressure Following a Vitreoretinal Surgery Using Goldmann Applanation Tonometry, Ica NCT06522867 | CHU de Quebec-Universite Laval | N/A |
| Recruiting | The OPTIMISE Study NCT05716945 | Maastricht University Medical Center | Phase 4 |
| Completed | 2311 TURGOR Study -Surgical Efficiency and Postoperative Corneal Clarity With Near Physiologic vs High IOP Set NCT07144644 | Research Insight LLC | — |
| Completed | Comparative Study of the NIDEK TONOREF III with Predicate Devices NCT06363045 | Nidek Co. LTD. | N/A |
| Completed | The Effect of the Steep Trendelenburg Position on Intraocular Pressure NCT06440642 | Dr. Lutfi Kirdar Kartal Training and Research Hospital | — |
| Terminated | An Extension Trial for Patients With Open-Angle Glaucoma Who Participated in the DF6-CL-20-01 Protocol. NCT06230393 | New World Medical, Inc. | — |
| Completed | Intraocular Pressure Data Collection With Tonometers NCT06450587 | Icare Finland Oy | N/A |
| Active Not Recruiting | Anterior Segment Optical Coherence Tomography Microstent Positioning NCT06666751 | University of Utah | — |
| Completed | Effects of Intubation on Intra-ocular Pressure and Optic Nerve Sheath Diameter NCT05763056 | Inonu University | N/A |
| Unknown | Impact of Home Intraocular Pressure Telemonitoring on Intraocular Pressure Control and Glaucoma Progression NCT05940623 | The University of Hong Kong | N/A |
| Recruiting | The Effect of Labor on Intraocular Pressure Fluctuation in Healthy Eyes NCT06016712 | Faculty Hospital Kralovske Vinohrady | N/A |
| Unknown | High Intraocular Pressure After Cataract Surgery NCT05834465 | Wenzhou Medical University | — |
| Recruiting | Acupuncture as Adjuvant Therapy for Glaucoma - Protocol for a Randomized Controlled Trial NCT05753137 | China Medical University Hospital | N/A |
| Completed | iCare ST500 Clinical Trial NCT05742009 | Icare Finland Oy | N/A |
| Active Not Recruiting | Effect of IOP Lowering on Progressive HM NCT05850936 | Sun Yat-sen University | N/A |
| Recruiting | Effect of Raised End-Tidal pCo2 on Choroidal Volume NCT06275308 | University of Pittsburgh | N/A |
| Completed | Clinical Study for TONOREF III Tested to ANSI Z80.10-2014 NCT07152808 | Nidek Co. LTD. | — |
| Unknown | Microinvasive Glaucoma Surgery -The Lowering Effect of Intraocular Pressure on Glaucoma Patients With High Fre NCT05466526 | National Taiwan University Hospital Hsin-Chu Branch | N/A |
| Unknown | Accuracy of Handheld and Non-contact Tonometry NCT05352906 | Benha University | N/A |
| Unknown | Changes After Suprachoroidal Injection. NCT05288192 | Benha University | N/A |
| Completed | Effects of Different Types of Anaesthesia on Intraocular Pressure During Lumbar Disc Herniation Surgery NCT06070480 | Giresun University | N/A |
| Completed | iCare HOME2 Clinical Trial NCT05162989 | Icare Finland Oy | N/A |
| Completed | Clinical Study of the Topcon Tonometer TRK-3 NCT05167773 | Topcon Corporation | — |
| Completed | Effect of Osteopathic Techiniques on Intraocular Pressure NCT04863209 | Federal University of São Paulo | N/A |
| Completed | Intraocular Pressure in Patients Undergoing Coronary Artery Bypass Graft Surgery With Cardiopulmonary Bypass NCT06494969 | Antalya Training and Research Hospital | — |
| Recruiting | Effects of Dexmedetomidine on Intraocular Pressure During Scheduled Spine Surgeries NCT04628663 | Attikon Hospital | N/A |
| Completed | Self Tonometry and Transfer of Glaucoma Patients' Data for Improving the Supply Situation NCT04698876 | University Hospital Muenster | N/A |
| Completed | A FIH Trial of the STREAMLINE™ SURGICAL SYSTEM NCT04700189 | New World Medical, Inc. | N/A |
| Unknown | Self-monitoring of the Intraocular Pressure Versus Hospital-based Diurnal Monitoring NCT04485897 | Luzerner Kantonsspital | N/A |
| Recruiting | Effect of Position and Anesthetic Choice in Intraocular Pressure in Robotic GYN (Gynecologic) Oncology Patient NCT04281017 | University of Florida | Phase 4 |
| Completed | Comparison of Intraocular Pressure Measurements Between Reichert Tono-Vera Tonometer and Goldmann Tonometry NCT04360369 | Reichert, Inc. | N/A |
| Completed | Assessing eFficacy and Safety of DEXTENZA 0.4 mg inseRt, Following Corneal Transplant Surgery NCT04521140 | Nicole Fram M.D. | Phase 4 |
| Completed | Brinzolamide-brimonidine Fixed Combination for Preventing IOP Elevation After Intravitreal Anti-VEGF Injection NCT04523844 | General Hospital of Athens Elpis | N/A |
| Completed | IOP Device Comparison Study NCT04211792 | London Health Sciences Centre Research Institute OR Lawson Research Institute of St. Joseph's | — |
| Completed | Interval Intraocular Pressure in Intravitreal Injection Study NCT04868175 | The University of Hong Kong | N/A |
| Completed | Evaluation of a Novel Method for Increasing Intraocular Pressure in Healthy Subjects NCT04044274 | Medical University of Vienna | N/A |
| Completed | The Effect of Brimonidine NCT03959176 | Wake Forest University Health Sciences | Phase 4 |
| Terminated | Intraocular Pressure and Optic Nerve Sheath Diameter Changes at Different PEEP Levels NCT03938402 | Marmara University | N/A |
| Completed | Establishment of an Anaesthetic Protocol for Examinations for Children With Glaucoma or Suspected Glaucoma NCT03972852 | Johannes Gutenberg University Mainz | — |
| Completed | Efficacy and Safety of Lens Extraction in Patients With Pseudoexfoliation Glaucoma NCT03494465 | Xerencia de Xestión Integrada de Ferrol | N/A |
| Withdrawn | Intraocular Pressure and Optic Nerve Sheath Diameter Changes in Laparoscopic Cholecystectomies NCT03933254 | Marmara University | — |
| Completed | The Effect of High vs. Low Fluid Volume on Ocular Parameters in Prone Spine Surgery NCT03890510 | Huashan Hospital | N/A |
| Completed | Aflibercept as Adjunctive Treatment for Filtration Surgery in Neovascular Glaucoma NCT04970251 | Siriraj Hospital | N/A |
| Completed | Is the Reduction in IOP After Treatment of 180 Degrees Equivalent to Treatment of 360 Degrees With SLT? NCT03529591 | Western University, Canada | N/A |
| Completed | Effects of C-MAC Videolaryngoscope, McGRATH Videolaryngoscope and Macintosh Direct Laryngoscope on Intraocular NCT03589638 | Inonu University | N/A |
| Completed | MINIject Glaucoma Implant in European Patients NCT03624361 | iSTAR Medical | N/A |
| Completed | Eyenovia MiDD Usability Study NCT03480906 | Eyenovia Inc. | N/A |
| Recruiting | IOP Elevation Study NCT03400137 | NYU Langone Health | N/A |
| Completed | Acute Effects of HIIT and SSMIT on Intraocular Pressure Among Sedentary Individuals NCT04133857 | University of Malaya | N/A |
| Completed | Comparative Study of the NIDEK TONOREF III and the Haag-Streit Goldmann Manual Tonometer and Comparison of Pac NCT03441477 | Nidek Co. LTD. | — |
| Completed | Effect of Topical Dexmedetomidine on Intraocular Pressure NCT03690622 | Beirut Eye Specialist Hospital | Phase 4 |
| Completed | Treatment Outcomes of a Novel Glaucoma Tube Shunt Implant for Intraocular Pressure Control in Eyes With Refrac NCT04297930 | National University Hospital, Singapore | — |
| Completed | Effect of Fixed Brinzolamide-brimonidine Combination on Intraocular Pressure After Phacoemulsification NCT03494257 | University Hospital of Patras | N/A |
| Completed | Analysis of the Microbiota in Goldmann Applanation Tonometers at a Reference Service in Goiânia NCT03359200 | Instituto de Olhos de Goiania | — |
| Completed | Comparative Study of the Topcon Tonometers CT-800 and TRK-2P and the Haag-Streit Goldmann Manual Tonometer and NCT03439774 | Topcon Medical Systems, Inc. | — |
| Unknown | Effect of Steep Trendelenburg in Laparoscopic Surgery on IOP & RNFL Thickness NCT03097705 | Carmel Medical Center | N/A |
| Completed | Glycerin-Preserved, Human-Donor, Corneoscleral Patch Grafts for Glaucoma Drainage Devices NCT04949347 | Siriraj Hospital | — |
| Completed | Efficacy and Safety of ab Interno Trabeculectomy With the Kahook Dual Blade NCT04202562 | Hospital San Carlos, Madrid | N/A |
| Completed | A Comparison of Videolaryngoscope and Direct Laryngoscope in IOP Changes, Throat Pain, IT and Hemodynamic Vari NCT03279172 | Diskapi Teaching and Research Hospital | N/A |
| Completed | Effect of Hemifacial Spasm on Intraocular Pressure Measurement NCT03390803 | Medipol University | — |
| Completed | The Effects of Intubation Via McGrath Videolaryngoscope on Intraocular Pressure NCT03003598 | Inonu University | N/A |
| Completed | Effects of Direct Laryngoscopic and Fiberoptic Intubation on Intraocular Pressure NCT03003585 | Inonu University | N/A |
| Completed | Modifiable Factors and Glaucoma - RCT NCT02972749 | Wolfson Medical Center | N/A |
| Completed | IOP Changes With Different Anesthetic Agents During Laparoscopic Colorectal Surgery NCT03016234 | Saint Vincent's Hospital, Korea | N/A |
| Completed | Quantitative Rise in Intraocular Pressure in Steep Trendelenburg Position NCT02646033 | Rajiv Gandhi Cancer Institute & Research Center, India | — |
| Completed | The Effect of Brimonidine on Intraocular Pressure When Dilating Routine Patients NCT03139708 | Wake Forest University Health Sciences | Phase 1 |
| Completed | Horizontal vs. Vertical Positioning of the iCare Rebound Tonometer and Effects on Intraocular Pressure Reading NCT02837536 | The University of Texas Health Science Center, Houston | N/A |
| Completed | Continuous Intraocular Pressure Patterns in Spine Surgery NCT03299400 | The University of Hong Kong | N/A |
| Completed | Assessment of Home Tonometry in Glaucoma NCT03057301 | NHS Lothian | — |
| Completed | Ocular-hypertensive Response to Topical Steroids in Children After Bilateral Strabismus Surgery NCT02816905 | Cairo University | Phase 4 |
| Withdrawn | Optic Nerve Head Quantification While Reducing Elevated Intracranial Pressure NCT02558309 | NYU Langone Health | — |
| Unknown | Intraocular Pressure Versus Optic Nerve Sheath Diameter NCT02697825 | Rajiv Gandhi Cancer Institute & Research Center, India | N/A |
| Completed | Effects Of Anaesthesia on Intraocular Pressure in Robotic Prostate Surgery NCT07033442 | Ataturk Training and Research Hospital | N/A |
| Completed | Comparing Rates of Glaucoma in Professional Wind Versus Non-Wind Instrument Players NCT02612571 | Wills Eye | — |
| Completed | Intraocular Pressure Variation by Pneumatic Tonometer Before and After Phacoemulsification NCT03016507 | VER Excelência em Oftalmologia | — |
| Unknown | Correlation Intraocular Pressure With Intracranial Pressure NCT03344432 | Hospital Civil de Guadalajara | — |
| Completed | Cutaneous Prostaglandin Application: Nail Growth, Nail Brittleness, and Eye Pressure NCT02448043 | Northwestern University | N/A |
| Completed | The Effect of Colonoscopy on Intralocular Pressure NCT02321722 | Meir Medical Center | — |
| Completed | Evaluation of the Water Drinking Test Response in Supine and Sitting Position Using the Continuous Measurement NCT02843971 | University Hospital, Grenoble | N/A |
| Completed | Loteprednol vs. Prednisolone and Fluorometholone NCT03123614 | University of Utah | Phase 4 |
| Completed | Comparative Study of Non-contact Tonometers for Intraocular Pressure and Corneal Cell Thickness Measurements NCT02138279 | Topcon Medical Systems, Inc. | — |
| Completed | Spinal Anesthesia - Intraocular Pressure NCT02061644 | Adiyaman University Research Hospital | N/A |
| Completed | Effect of Selective Laser Trabeculoplasty Versus Travoprost on Circardian Intraocular Pressure NCT02105311 | Prince of Songkla University | Phase 4 |
| Completed | Intraocular Pressure Change Following Intravitreal Injection of Anti-vascular Endothelial Growth Factor Agent NCT02474225 | Prince of Songkla University | — |
| Completed | The Intraocular Pressure Measured by Different Tonometers in Corneal Edema NCT01998568 | Prince of Songkla University | — |
| Completed | An Observational Study of the Use of Chloral Hydrate for Ophthalmic Procedures in Children NCT02985567 | Johns Hopkins University | — |
| Completed | Efficacy of Latanoprostene Bunod in Lowering Intraocular Pressure in Japanese Healthy Male Volunteers NCT01895985 | Bausch & Lomb Incorporated | Phase 1 |
| Completed | The Effect of Ocular Massage on the Management of Elevated Intraocular Pressure After Acute Angle Closure NCT02539758 | Lv Yingjuan | N/A |
| Completed | Intraocular Pressure Fluctuation in Patients With Glaucoma and in Healthy Patients During Standard Yoga Positi NCT01915680 | Robert Ritch, MD, LLC. | — |
| Completed | the Pops-titration Versus the Slow-coagulation Cyclophotocoagulation in Treatment of Refractory Glaucoma NCT01774227 | Prince of Songkla University | N/A |
| Unknown | The Effect of Dosage of Caffeine on Intraocular Pressure NCT01793311 | Chiang Mai University | N/A |
| Completed | The Measurement of Intraocular Pressure in Normal Children Under General Anesthesia With and Without Nitrous O NCT01925391 | University of Miami | EARLY_Phase 1 |
| Completed | Effect of Nepafenac Eye Drops on Intraocular Pressure in Normal Eyes NCT01995890 | Dr T V Patel Eye Institute | Phase 4 |
| Completed | iCare vs Tonopen vs Goldmann Applanation Post-vitrectomy Surgery NCT01786954 | Duke University | N/A |
| Unknown | the Impact of EECP on Intraocular Pressure NCT01774188 | First Affiliated Hospital, Sun Yat-Sen University | — |
| Unknown | Efficacy Comparison Study of Steroids to Control Post-operative Inflammation NCT01801774 | Mahidol University | Phase 4 |
| Unknown | The Response of Intraocular Pressure to Systemic Hypercapnia and Hyperoxia NCT01325285 | University of Toronto | — |
| Completed | Reliability of Dynamic Contour Tonometry (DCT) NCT01579331 | University of Catanzaro | Phase 4 |
| Unknown | Effect of Sevoflurane Concentration on Intraocular Pressure in Surgical Children With Healthy Eyes NCT01248689 | Tel-Aviv Sourasky Medical Center | N/A |
| Completed | 24-hour IOP-lowering Effect of 0.01% Bimatoprost NCT01271686 | University of California, San Diego | Phase 4 |
| Completed | Study Comparing the Safety and Efficacy of BOL-303259-X to Latanoprost in Subjects With Glaucoma or Ocular Hyp NCT01223378 | Bausch & Lomb Incorporated | Phase 2 |
| Completed | A Study to Assess Intraocular Pressure and Ocular Safety of the Beta-3 Agonist Mirabegron in Research Subjects NCT01284309 | Astellas Pharma Inc | Phase 1 |
| Withdrawn | Effects of Weight Loss From Bariatric Surgery on Intraocular Pressure (IOP) NCT00837226 | The University of Texas Health Science Center, Houston | — |
| Completed | Aqueous Humor Dynamics and Brimonidine NCT01144494 | University of Nebraska | EARLY_Phase 1 |
| Completed | Effect of Child Delivery on Intraocular Pressure NCT01174342 | Meir Medical Center | — |
| Completed | Nasal Steroids in Controlled Glaucoma NCT00775489 | University Health Network, Toronto | N/A |
| Completed | Effect of Cisatracurium Versus Atracurium on Intraocular Pressure in Patients Underwent General Anesthesia NCT01273831 | Isfahan University of Medical Sciences | Phase 2 |
| Completed | Comparison of DisCoVisc and Hydroxypropylmethylcellulose 2% NCT01387620 | University of Sao Paulo | Phase 4 |
| Terminated | Anecortave Acetate Injection to Treat Steroid-responsive Intraocular Pressure Increase in Cornea Transplant Pa NCT00884039 | Cornea Research Foundation of America | N/A |
| Completed | Icare Versus Haag-Streit Applanation Tonometer NCT01159340 | Icare Finland Oy | — |
| Withdrawn | Steep Trendelenburg Positioning on Intra-Ocular Pressure During Surgery for Endometrial Robotics Versus Laparo NCT00852774 | Ohio State University Comprehensive Cancer Center | — |
| Withdrawn | Effects of Forskolin on Intraocular Pressure in Glaucomatous Patients Under Treatment With Either Beta-blocker NCT00863811 | Sooft Italia | — |
| Withdrawn | Effects of Forskolin on Intraocular Pressure in Glaucomatous Patients Under Maximum Tolerated Medical Therapy NCT00864578 | Sooft Italia | — |
| Completed | Evaluation of Comfort With Xibrom (Bromfenac Ophthalmic Solution)0.09% and Nevanac (Nepafenac Ophthalmic Suspe NCT00828477 | Bp Consulting, Inc | Phase 4 |
| Withdrawn | Intra-observer and Inter-observer Variability With Dynamic Contour Tonometry. NCT00818233 | Yale University | — |
| Completed | Vitamin D AND Glucose Handling Evaluated by Glucose Clamp NCT00809744 | University Hospital of North Norway | Phase 2 |
| Completed | Effect of NSAID on Travoprost-induced Conjunctival Hyperemia and IOP Reduction in Normal Eyes NCT02136589 | Tokyo University | Phase 4 |
| Withdrawn | Relation Between Intraocular Pressure Lowering Effects of Topical Brimonidine and Alpha 2 Receptor Polymorphis NCT00712777 | Medical University of Vienna | N/A |
| Completed | Intraocular Pressure During Spine Surgery NCT00593359 | The Cleveland Clinic | — |
| Completed | Screening for Glaucoma in Namil Area, South Korea NCT00727168 | Korean Glaucoma Society | — |
| Completed | Intraocular Pressure (IOP) Assessed by Dynamic Contour Tonometer (DCT) and Goldman Applanation Tonometry (GAT) NCT00552019 | St. Franziskus Hospital | — |
| Unknown | IOP Reduction After Anecortave Acetate Injection in Glaucoma Patients NCT00533962 | Federal University of São Paulo | N/A |
| Completed | Assessment of a New Goldmann Applanation Tonometer NCT00555763 | Insel Gruppe AG, University Hospital Bern | Phase 3 |
| Completed | Intraocular Pressure During Abdominal Aortic Aneurysm (AAA) Repair NCT00450294 | University of Manitoba | — |
| Completed | Intraocular Pressure (IOP) and Isometric Exercise NCT00635180 | Ullevaal University Hospital | N/A |
| Enrolling By Invitation | External Influences Upon Ocular Homeostasis NCT00338065 | Vanderbilt University Medical Center | N/A |
| Terminated | Azopt (Brinzolamide 1.0%) Plus Travatan (Travoprost 0.004%) in Treating Patients With Chronic Angle-Closure Gl NCT00758342 | Alcon Research | Phase 4 |
| Completed | Intra Ocular Pressure During Robotic Prostatectomy NCT00369057 | Weill Medical College of Cornell University | — |
| Completed | Set up for in-Vivo Measurement of Dynamic Intraocular Pressure (IOP) NCT00856141 | Iladevi Cataract and IOL Research Center | N/A |
| Completed | Long-Term IOP Fluctuation and VF Progression After Triple Procedure NCT00428740 | Yonsei University | — |
| Completed | Usefulness of Topical Non-Steroidal Anti-Inflammatory Drugs or Steroids Before Trabeculectomy and Clinical Out NCT00707421 | Universitaire Ziekenhuizen KU Leuven | Phase 3 |
| Completed | Effect of Central Corneal Thickness On IOP Using Various Tonometers NCT00570791 | University of Nebraska | — |
| Completed | Effects of Latanoprost on Choroidal Blood Flow Regulation in Human Subjects NCT00712400 | Medical University of Vienna | N/A |
| Completed | How Astigmatism Influences Corneal Biomechanics and Intraocular Pressure NCT03162471 | Medical University of Lodz | — |
| Completed | Corneal Endothelium After Glaucoma Surgery NCT00863018 | Chungnam National University | — |
| Completed | Circadian Variations in Ocular Blood Flow in Glaucomatous and Normal Eyes NCT00707226 | Medical University of Vienna | — |
| Completed | Primary Vitrectomy for the Treatment of Retinal Detachment in Highly Myopic NCT01480505 | Centre Hospitalier Universitaire Dijon | — |