View clinical trials related to Glaucoma.
Filter by:Glaucoma is a leading cause of blindness worldwide. It is caused by persistently elevated intraocular pressure causing progressive visual field loss. While a number of conventional medical and surgical therapies exist, a significant number of patients fail to respond resulting in persistently elevated intraocular pressure and eventual blindness. While outflow from the eye primarily occurs through the front of the eye, there is an often overlooked pathway to remove fluid that is beneath the retina. Surgical removal of retina to create paths for outflow (surgical retinotomy) in areas damaged by glaucoma can provide access to this alternative outflow pathway thereby reducing intraocular pressure and halting the vision loss.
The AGLT is a prospective, multicenter, randomized study in which adult black Africans with treatment-naive open-angle glaucoma are assigned to therapy with selective laser trabeculoplasty (SLT), medications provided at no cost (MED), or medications provided by prescription for subjects to obtain at their own expense as per usual care (RX). The overall goal of the AGLT is to determine the best treatment strategy for newly-diagnosed open-angle glaucoma in Africa.
The purpose of this study is to evaluate the safety and performance of the EYEMATE system in patients undergoing concomitant implantation of a BKPro type 1 and an EYEMATE sensor over the 24 months period beginning at implantation.
Baseline 24-hour SENSIMED Triggerfish (TF) recordings as well as functional and structural vision tests measured prospectively every 3 months over a 2-year period, will be used to model TF's ability to serve as a risk factor for individual progression rates.
This is a single center, prospective study to calculate cerebrospinal fluid pressure (CSFp) using a non-invasive device and assess its role in the development of optic neuropathy due to glaucoma or idiopathic intracranial hypertension (IIH). The study also aims to assess whether CSFp differs between untreated and treated patients with glaucoma, ocular hypertension, IIH, and other ocular diseases that may be associated with CSFp differences.
This study is a randomized, double-masked trial to examine the response to trabeculectomy surgery. In this study, patients will be randomized to receive MMC via subconjunctival injection or topical sponge application.
Screening of haitian children between the ages of 3 and 6 years old for amblyogenic risk factors with the use of the Spot photoscreener. The photoscreener results will be compared to the complete ophthalmologic evaluation. Primarily, this will allow evaluation of the performance of the spot photoscreener in the haitian children population. Secondarily, this study will gather epidemiological information on vision problems in the haitian children population.
1. Investigate degree of postoperative satisfaction in county level hospital glaucoma patients. 2. Investigate the effect of educational intervention affect the degree of satisfaction in glaucoma patients. 3. Investigate the effect factors of postoperative satisfaction.
Objective: To determine the clinical variables that influence aqueous outflow facility (Co) and intraocular pressure (IOP) in uveitis. Uveitic glaucoma is potentially blinding and occurs in 17-46% of chronic uveitis patients. Uveitic activity causes fluctuating IOP due to decreased Co, increased uveoscleral outflow or decreased aqueous production. Specific Aim 1: To evaluate the risk factors for high IOP and low Co in uveitis Hypothesis: Decreased Co and increased IOP will occur with increasing anterior chamber (AC) flare, AC cells, degree of synechial angle closure, increased duration of disease, higher uveitis activity and increasing steroid use Specific Aim 2: To determine prospectively the effect of AC flare on Co and IOP in "quiescent" uveitis Hypothesis: AC flare even in the absence of AC cells will cause progressive decline in Co. Methods: In this proof of concept study, thirty consecutive patients with acute or chronic uveitis will be recruited from the uveitis clinic. Ten patients with "quiescent" uveitis (no AC cells) will be recruited for the prospective arm and followed every 2-3 months for 3 visits. Co will be measured using 2-minute pneumatonometer tonography. The effect of risk factors on IOP and Co in uveitis will be studied using generalized linear modelling techniques. These risk factors include AC flare (using the laser flare meter), AC cells, degree of angle closure (by gonioscopy), duration of disease, disease activity and corticosteroid use within the last year. In the prospective study, the patients will be divided into subgroups with low flare (< 20ph/ms) and high flare (≥ 20 ph/msec) and the change in Co and IOP will be analyzed. Impact: This will be the first study to systematically analyze the risk factors for decrease in Co and increase in IOP in uveitis and to prospectively evaluate the effect of AC flare on Co. Proof that AC flare can damage the trabecular meshwork will corroborate previous experimental evidence and change the paradigm of uveitis treatment. Knowledge of the risk factors that affect Co and IOP will aid in identifying patients that may need escalation of their uveitis or glaucoma treatment to prevent optic nerve damage.
The purpose of this study is to try to identify the cause of damage to the drainage system of the eye (the trabecular meshwork). Damage to this system may cause elevation in the pressure within the eye and thereby damage to the optic nerve and the vision.