View clinical trials related to Open-Angle Glaucoma.
Filter by:To evaluate the ocular hypotensive efficacy and ocular and systemic safety of AR-13324 Ophthalmic Solution, 0.02% compared to the active comparator Timolol maleate Ophthalmic Solution, 0.5%
The purpose of this study is to investigate the safety and efficacy of five concentrations of DE-117 ophthalmic solution.
The purpose of this research study is to hypothesize that Simbrinza will achieve a decrease in intraocular pressure and increase in ocular perfusion pressure throughout the diurnal and nocturnal periods. The primary aim of this study will be to determine the effects of Simbrinza at multiple intervals throughout a 24-hour period. The secondary aim will be to compare these to those of timolol.
Slow release formulation of latanoprost is compared for safety and pressure-lowering efficacy with topically administration of commercially available latanoprost in patient with glaucoma and ocular hypertension
The primary objectives of this study are to compare the safety, tolerability, and mean change from baseline in diurnal intraocular pressure (IOP) of ONO-9054 30 µg/mL (0.003%) to latanoprost 0.005% following ocular instillation once every evening for 28 days.
To evaluate the ocular hypotensive efficacy of PG324 ophthalmic solution relative to its individual components in patients with open angle glaucoma or ocular hypertension.
Glaucoma is an optic neuropathy in which the main risk factor is intraocular pressure (IOP). The search for other variables involved in glaucoma pathogenesis and progression has identified both systemic and ocular signs of vascular dysfunction in glaucoma patients, such as migraine, peripheral vasospasm, systemic hypotension and cerebral microvascular ischemia. Ocular blood flow studies using Color Doppler Imaging (CDI) technology has demonstrated blood velocities and increased vascular resistance (RI) to exist in such patients when compared to healthy controls. However, a CDI examination provides far more additional information, such as arterial pulsatility (PI) and mean blood velocities (MFV). While these have been used for decades now to study cerebral arteries vasoreactivity, little is known about how these variables are changed in glaucoma patients. We have recently demonstrated that these variables can be used to identify a change in the normal vascular activity when there is increased resistance. In glaucoma patients, a cutpoint in RI of the retrobulbar arteries could be determined beyond which PI increased significantly. This sharp increase in the PI has been used as an indirect signal that the vessel's ability to buffer a decreased perfusion pressure has been surpassed. The normal response to a decreased perfusion in a vascular territory with autoregulation is an increase in dilation in the downstream microcirculation, increasing cross section area in an attempt to keep a steady MFV. As PI is calculated using the vessel's MFV [PI = (PSV-EDV)/MFV], it is highly sensitive to changes in this variable. As such, the cutpoints we have identified in glaucoma patients are therefore an indirect assessment of the vessel's autoregulation limit. While our data could provide the rational as to why these RI values are associated with progression, the clinical question arises as to whether these cutpoints can be modulated by topical glaucoma therapy. As some medications such as carbonic anhydrase inhibitors have been found to have a positive effect in disease progression in what appears to be a non-IOP related effect, we considered the hypothesis that these drugs could have a positive impact on the ocular's microcirculation vasoactive response, potentially enabling to keep a steady MFV into higher values of vascular resistance.
Determine efficacy of the latanoprost punctal plug. Effect of configuration of L-PPDS placement on efficacy will also be examined.
The purpose of this study is to demonstrate superior intraocular pressure (IOP) control with travoprost 0.004% / timolol 0.5% (DuoTrav®) compared to beta-blocker monotherapy in patients with open-angle glaucoma or ocular hypertension.
Glaucoma is a progressive disease resulting in loss of retinal nerve cells and their axons (retinal nerve fibers). Retinal nerve fibers are ordered in a special manner when they enter the optic nerve. Hence, damage to the retinal nerve fibers by glaucoma results in visual field defects at certain locations. Furthermore, the retinal nerve fiber layers from different receptors for different colors are ordered in a special manner as well. Thus, it is possible that glaucomatous damage causes color vision dysfunction (dyschromatopsia). At the moment there is disagreement whether dyschromatopsia occurs at early- to mid-stage or only in end-stage glaucoma. By testing color vision in glaucoma patients the prevalence of dyschromatopsia in glaucoma and in different stages of the disease will be investigated.