View clinical trials related to Glaucoma.
Filter by:The purpose of the study is to repeatability, reproducibility and agreement of eye measurements in retina and glaucoma patients.
Ocular blood flow has been consistently demonstrated to be altered in glaucoma patients when compared to otherwise healthy individuals. Numerous Doppler studies have shown a decrease in flow velocities in the retrobulbar arteries in what appears to be related to the degree of the glaucomatous disease. The anatomic pathway of the several arteries into the eye is intricately complicate, with at least one of them (the central retina artery) penetrating the optic nerve before entering the eye and supplying the innermost structures of the globe. As the optic nerve is surrounded by a layer of cerebrospinal fluid (CSF) which is in continuity with the rest of the central nervous system, this central retinal artery has also to cross this CSF containing compartment. Because of the intrinsic pressure this CSF - corresponding to the intracranial pressure at the orbital level - the possibility exists that this pressure around the optic disc could affect the blood flow of the arteries that go through it. The investigators will try to detect if a correlation exists between the optic nerve sheath diameter and the blood flow in the retrobulbar vessels of glaucoma patients.
Importance: Visual field loss after retinal damage in glaucoma is considered irreversible and methods are needed to achieve vision restoration. Behavioral vision restoration training (VRT), shown to improve visual fields in hemianopia and optic nerve damage, might comprise such a method. Objective: To determine if behaviorally activating areas of residual visual (ARV) using VRT by daily one hour training for 3 months improves detection performance in perimetry compared to a vision discrimination task in the intact visual field sector.
The aim of the study is to evaluate the effectiveness and the safety of the cyclocoagulation using HIFU in glaucoma patients
This study will investigate if micropulse laser trabeculoplasty (532nm) is as effecttive as or better than the conventional laser trabeculoplasty (532nm), it might be a new treatment strategy for glaucoma patients. It is done with a laser device that can also be used for many other ophthalmic applications, thus reducing the economic burden of treatment.
The purpose of this research study is to determine the diurnal and nocturnal effects of Travoprost with SofZia (Travatan Z) on intraocular pressure and ocular perfusion pressure.
The primary objective of this crossover trial is to compare the 3-month, mean 24-hour intraocular pressure (IOP) control and safety obtained with two popular fixed combinations in glaucoma patients insufficiently controlled with latanoprost monotherapy. This study will compare the 24-hour efficacy of travoprost/timolol fixed combination without benzalkonium chloride given once in the evening, versus the latanoprost/timolol fixed combination given in the evening. It is assumed that travoprost/timolol fixed combination will provide better quality of 24-hour pressure control.
- Transcleral cyclophotocoagulation (TSCPC) has long been used as refractory glaucoma management and is very easy to learn and easy to perform. - Recent advances in laser technology; the role of TSCPC is being expanded because it has benefits of noninvasive glaucoma procedure. - The titration (pops), the fixed high-energy, and the fixed-low energy (slow-coagulation) are three energy delivery techniques. - The present study would report on the outcome (efficacy and safety) of the slow-coagulation versus the titration method in treatment of refractory glaucoma with dark iris. - The results would provide reliable evidences to supplement clinical judgment when making a decision in favor of each treatment method for glaucoma patients.
Interplay between the increasing IOP and decreasing blood pressure (BP) during the 24-hour period, especially in the nocturnal period, may lead to insufficient perfusion pressure of the optic nerve and contribute to the glaucomatous damage in adjunct to the antero-posterior vectorial mechanical impact on the lamina cribrosa, the translaminar pressure. Patients with progressive VF loss showed greater nocturnal BP dips than patients with stable VF. Reduced mean intraocular perfusion pressure (IOPP) was significantly associated with the extent of glaucomatous damage. How the nycthemeral IOP fluctuation influences glaucoma progression has not been studied in a prospective manner and remains to be elucidated. The purpose of this study is to assess the relationship between the 24-hour IOP fluctuation pattern and the 24-hour BP pattern in patients with primary open angle glaucoma (POAG). IOP fluctuations will be monitored with SENSIMED Triggerfish®, a portable investigational device using a contact lens sensor that monitors the IOP fluctuation continuously over 24-hours.
Selective laser trabeculoplasty (SLT) is an increasingly popular treatment modality in early-to-moderate glaucoma patients. SLT has been suggested to reduce IOP more consistently during the nocturnal period than during the diurnal period in a group of medically-treated patients with primary open angle glaucoma (POAG). At present, there is scarce data on SLT effects on the 24-hour IOP pattern in patients with glaucoma and there is no data on the 24-hour effect of SLT in untreated glaucoma patients. The purpose of this study is to assess the changes of IOP over a 24-hour period in patients with glaucoma undergoing SLT.