View clinical trials related to Glaucoma.
Filter by:The purpose of this study is to evaluate the effect of microdrops vs. standard eyedrops of 0.5% timolol maleate in adults with primary open-angle glaucoma or ocular hypertension in terms of intraocular pressure-lowering efficacy and cardiovascular side effects.
The aim of this clinical study is to provide information about the variability of the intraocular pressure (IOP) self-measurements with the iCare HOME2 tonometer in comparison to the variability of the IOP measurements with the reference tonometer (iCare IC200), over a wide range of IOP values.
This study aims to evaluate the efficacy and safety of applying pulse electrical stimulation around eyes of glaucoma patients.
With the increasing incidence of proliferative diabetic retinopathy (PDR), subsequent neovascular glaucoma (NVG) has become one of the main causes of blindness in PDR patients, and the intraocular pressure of PDR patients with NVG is often stubborn. For these patients, not only is the effect of drugs in lowering intraocular pressure poor, but the results of surgery are often unsatisfactory. Because of its poor prognosis, clinical research for better strategy is of great significance in the current situation. At present, for such patients, a combination of effective control of intraocular pressure and treatment of the primary disease is often used. The purpose of this study was to investigate the clinical effects of preoperative with/without intraoperative anti-vascular endothelial growth factor (VEGF) drug therapy combined with pars plana vitrectomy (PPV), pan-retinal photocoagulation (PRP), and pressure-reducing valve implantation in patients with NVG secondary to PDR. Furthermore, the changes of neurotrophic factors in the vitreous humor before and after anti-VEGF treatment will be explored.
This study aims to develop a training course for screening glaucoma using fundus images obtained during diabetic retinopathy screening by non-physician graders. The study also aims to test this training course among non-physician graders in Vietnam
In adult patients, intraocular pression readings are often taken with an air puff tonometer or goldmann tonometer. The current gold standard for IOP measurement is the Goldmann Applanation Tonometry (GAT). In some patients, measurement of intraocular pressure taken by applanation or by air puff may prove to be impossible for various reasons (obesity, handicap, mental disorder, blindness for Air Puff Tonometry, Anxiety, etc). There are also many other devices that can be used to measure IOP, including those using rebound tonometry like the Icare 200. The rebound tonometer would systematize IOP screening because of its ease of use, provided its measurements are reliable. In this prospective study, investigators will be measuring participant's IOP with Goldmann Applanation Tonometry, Icare 200 Tonometer and Air Puff Tonometry to see if there is an agreement in IOP between the different devices. Investigators will also look if there is a concordance between central corneal thickness and IOP. Moreover, investigators will look if there is a IOP concordance between the 3 different devices for hight BMI people. Indeed, higher body mass index tend to have difficulties with proper positioning at the slit lamp that may lead to inaccurate GAT measurements. Additionally, stress level of the patients with different tonometry devices will be recorded using a visual analog scale.
In this study, the study team utilize virtual reality (VR) to simulate visual impairments of different types and severity in healthy subjects. The platform implements three of the most widespread forms of visual impairment in the United States (US): age-related macular degeneration (AMD), diabetic retinopathy (DR), and glaucoma, each with three levels of severity, (mild, moderate, and severe). At present, glaucoma is further developed toward a multidimensional visual impairment simulation. The platform is utilized: i) to provide a safe, controllable, and repeatable set of environments for development and preliminary testing of electronic travel aids (ETAs) in a variety of conditions (i.e., using the ETA to navigate in the immersed environment); and ii) to equip blind and low vision (BVI) professionals, inclusive of orientation and mobility (O&M) instructors, with a controlled, tunable training platform for skill/capacity building, assessment, and refinement of O&M techniques, as well as visually impaired trainees with a safe and immersive environment to improve their O&M skills and learn novel techniques. Two sets of hypothesis-driven experiments are proposed to assess the feasibility of the platform with respect to these two objectives.
To evaluate safety, effectiveness, and the surgical performance of CADENCE in patients with refractory glaucoma.
To study possible correlation between the size of the pupil in both room light and after dilation between both eyes in bilateral pseudoexfoliation with Intraocular pressure, lens clarity and stability, Optic disc , Visual changes and glaucoma changes by optical coherence tomography
Open angle glaucoma (OAG) is considered a common cause of irreversible vision loss worldwide. It is an optic neuropathy associated with progressive loss and degeneration of the retinal ganglion cell layer (RGC) and its axons (retinal nerve fiber layer; RNFL), which lead to neuroretinal rim excavation and corresponding visual field defects.