Clinical trials: IOP
Mucopolysaccharidosis, Fabry Disease
Non-invasive Assessment of Intraocular Pressure in MPS by Use of the Ocular Response Analyzer.
The aim of the present study is to compare intraocular pressure (IOP) values assessed with Ocular Response Analyzer to the classical gold standard of IOP measurement, to Goldmann applanation tonometry by mucopolysacchyridosis…
- Trial name
- MPSORA (NCT01695161)
- Where
- Germany
- Volunteers
- 75 people, healthy volunteers welcome
- Sponsor
- Johannes Gutenberg University Mainz
Intracranial Pressure Increase
Non-Invasive and Non-Contact Intracranial Pressure Waveform Recording Using Dynamic Video Ophthalmoscopy
This study will test the use of video ophthalmoscope to provide information about intracranial pressure without the use of invasive methods, anesthesia or contact with the eye.
- Trial name
- ICP Waveform (NCT04046523)
- Testing
- Video ophthalmoscope
- Where
- United States
- Volunteers
- 90 people, healthy volunteers welcome
- Sponsor
- University of Minnesota
Intraocular Pressure
Effect of Raised End-Tidal pCo2 on Choroidal Volume
This study is to investigate the relationship between arterial carbon dioxide (CO2) concentration and vitreous pressure on the choroidal volume by integrated intraoperative OCT imaging under eye exams under anesthesia.
- Trial name
- NCT06275308
- Testing
- Ventilation manipulation
- Where
- United States
- Volunteers
- 20 people, healthy volunteers welcome
- Sponsor
- University of Pittsburgh
Intraocular Pressure
External Influences Upon Ocular Homeostasis
Our experiments are designed to test the overall hypothesis that position-dependent or water-dependent intra-ocular pressure (IOP) spikes occur in humans, and that these challenge ocular homeostasis.
- Trial name
- NCT00338065
- Testing
- Postural change, Water drinking
- Where
- United States
- Volunteers
- 200 people, healthy volunteers welcome
- Sponsor
- Vanderbilt University Medical Center
Prostate Cancer
Effects of PEEP on Intracranial and Intraocular Pressure in Robot-assisted Laparoscopic Radical Prostatectomy
To investigate the effects of positive end-expiratory pressure (PEEP) on the intracerebral pressure (ICP) and intraocular pressure (IOP) in patients undergoing robot assisted laparoscopic radical prostatectomy (RALRP)
- Trial name
- NCT03031613
- Testing
- PEEP group, ZEEP group
- Where
- South Korea
- Volunteers
- 50 people, healthy volunteers welcome
- Sponsor
- Gangnam Severance Hospital
Glaucoma, Open-Angle, Circadian Rhythm
Circadian Variations in Ocular Blood Flow in Glaucomatous and Normal Eyes
After focusing many years only on intraocular pressure (IOP) as the primary risk factor, recently the impact of ocular blood flow is getting more consideration for the pathophysiology of glaucoma.
- Conditions
- Glaucoma, Open-Angle, Circadian Rhythm, Intraocular Pressure, Regional Blood Flow
- Trial name
- NCT00707226
- Where
- Austria
- Volunteers
- 30 people, healthy volunteers welcome
- Sponsor
- Medical University of Vienna
Anesthesia, Intraocular Pressure
Establishment of an Anaesthetic Protocol for Examinations for Children With Glaucoma or Suspected Glaucoma
Correct measurement of the intraocular pressure of children with glaucoma or suspected glaucoma is essential for diagnosis and therapy.
- Conditions
- Anesthesia, Intraocular Pressure, Glaucoma, Suspect, Pediatric Glaucoma
- Trial name
- eyeBIS (NCT03972852)
- Where
- Germany
- Volunteers
- 120 people, healthy volunteers welcome
- Sponsor
- Johannes Gutenberg University Mainz
Glaucoma
Does Lowering Eye Pressure Affect the Results Obtained From Objective Visual Field Testing?
A study to determine whether a patient's range of vision test results improve after their eye pressure is lowered by 30% or more by testing on a new machine called the Accumap and how to learn how much the Accumap's results…
- Trial name
- NCT00799994
- Where
- United States
- Volunteers
- 23 people, healthy volunteers welcome
- Sponsor
- Wills Eye
Open Angle Glaucoma
Micropulse Laser Trabeculoplasty (MLT) Versus Selective Laser Trabeculoplasty (SLT) for Treatment of Open Angle Glaucoma
The purpose of this study is to evaluate the effectiveness of a new laser (called Micropulse Laser Trabeculoplasty or MLT) in the treatment of glaucoma compared to the conventional laser presently used which is called selective…
- Trial name
- NCT01956942
- Testing
- Micropulse Laser Trabeculoplasty, Selective Laser Trabeculoplasty
- Where
- United States
- Volunteers
- 81 people, healthy volunteers welcome
- Sponsor
- David Belyea
Synthetic Cannabinoid Abuse (Disorder), Eye Manifestations
Ocular Effects of Synthetic Cannabinoids
The goal of this observational study is to evaluate the ocular effects of Bonzai (synthetic cannabinoids) with spectral-domain optical coherence tomography.
- Trial name
- Bonsai (NCT06235346)
- Where
- Turkey (Türkiye)
- Volunteers
- 90 people, healthy volunteers welcome
- Sponsor
- Bezmialem Vakif University
Nuclear Cataract
Less Discomfort and Less Pharmacology. Cataract Surgery at Physiologic Intraocular Pressure (IOP)
To investigate the impact of high vs low Intraocular Pressure (IOP) on the intraoperative experience for the patient and surgeon.
- Trial name
- NCT06325397
- Testing
- High Intraocular Pressure (IOP), Low Intraocular Pressure (IOP)
- Where
- United States
- Volunteers
- 65 people, healthy volunteers welcome
- Sponsor
- Matthew Rauen
Glaucoma
Comparison Between Handheld Rebound Tonometer and Applanation Tonometer in IOP Measurement in Paediatric Glaucomas
To compare the accuracy between handheld rebound tonometer \& applanation tonometer in IOP measurement in pediatric glaucoma cases
- Trial name
- NCT06766799
- Testing
- Rebound and Applanation Tonometer
- Volunteers
- 160 people, healthy volunteers welcome
- Sponsor
- Sohag University
Phacoemulsification
Clinical Analysis of Ocular Parameters Contributing to Intraoperative Pain During Standard Phacoemulsification
Charts of 142 patients who underwent standard phacoemulsification under topical anesthesia between March and August 2016 were reviewed.
- Trial name
- NCT03031652
- Testing
- Phacoemulsification
- Where
- South Korea
- Volunteers
- 142 people, healthy volunteers welcome
- Sponsor
- Kyungpook National University Hospital
Glaucoma
Comparison of Intraocular Pressure Measurement With the Novel TonoVera Device With Other Commonly Used Devices
We are testing the accuracy of Reichert's Tono-Vera tonometer by comparing measurements of IOP with this device and measurements with other commonly-used tonometers, including Goldmann Applanation and iCare.
- Trial name
- NCT05523622
- Testing
- Tono-Vera tonometer, Goldman Applanation Tonometry
- Where
- United States
- Volunteers
- 300 people, healthy volunteers welcome
- Sponsor
- State University of New York at Buffalo
Glaucoma
Effectiveness of a Procedure for Previously Failed Glaucoma Surgery
Transconjunctival mitomycin-C in needle bleb revision may be an effective procedure to treat cases with a previously failed trabeculectomy. We will investigate approximately 100 consecutive cases with follow up of up to 9 years.
- Trial name
- NCT00347789
- Testing
- Glaucoma surgery- Bleb revision
- Where
- United States
- Volunteers
- 100 people, healthy volunteers welcome
- Sponsor
- Glaucoma Research & Education Group
Myopia, Anisometropia
Ocular Response Analyzer Assessment of Intraocular Pressure and Corneal Biomechanical Properties in Myopic and Anisometropic Patients Under Atropine Treatment
Our study has three parts has three parts, and the main aim of the study is to find out if corneal hysteresis was associated with myopia or even a predictor of myopia poor control predictor: Part 1 of our study: patients with…
- Trial name
- NCT00658502
- Where
- Taiwan
- Volunteers
- 100 people, healthy volunteers welcome
- Sponsor
- Far Eastern Memorial Hospital
Intraocular Pressure
Analysis of the Microbiota in Goldmann Applanation Tonometers at a Reference Service in Goiânia
This study aims to evaluate the microbiota of goldmann tonometers and its possible change over the visits
- Trial name
- NCT03359200
- Where
- Brazil
- Volunteers
- 1 people, healthy volunteers welcome
- Sponsor
- Instituto de Olhos de Goiania
Primary Open Angle Glaucoma, Ocular Hypertension
The Efficacy of Selective Laser Trabeculoplasty
Selective laser trabeculoplasty (SLT) is a new method to reduce intraocular pressure in eyes with open angle glaucoma or ocular hypertension. SLT may also be effective for cases with previously failed ALT procedures.
- Conditions
- Primary Open Angle Glaucoma, Ocular Hypertension, Pseudo-Exfoliative Glaucoma, Pigment Dispersion Glaucoma
- Trial name
- NCT00347893
- Testing
- Selective laser trabeculoplasty
- Where
- United States
- Volunteers
- healthy volunteers welcome
- Sponsor
- Glaucoma Research & Education Group
Glaucoma, Intraocular Pressure
The Measurement of Intraocular Pressure in Normal Children Under General Anesthesia With and Without Nitrous Oxide and Anesthetic Eye Drops
Pediatric glaucoma is a rare but potentially blinding condition where the pressure in the eye is too high. Diagnosis is based on intraocular pressure (IOP) and assessment of the optic nerve, cornea and other structures.
- Conditions
- Glaucoma, Intraocular Pressure, Anesthesia
- Trial name
- IOP (NCT01925391)
- Testing
- Tono-pen XL Applanation tonometer + Ocu-film +
- Where
- 2 sites in United States
- Volunteers
- 75 people, healthy volunteers welcome
- Sponsor
- University of Miami
Nuclear Cataract
Phacoemulsification at High IOP and Physiologic IOP: Impact on Anterior and Posterior Segment Physiology
The purpose of this study is to investigate the anterior and posterior structure and functional changes and vascular alterations when performing phacoemulsification at high IOP vs low, more physiological IOP using Centurion®…
- Trial name
- NCT05765201
- Testing
- High IOP, Low IOP
- Where
- United States
- Volunteers
- 27 people, healthy volunteers welcome
- Sponsor
- Matthew Rauen