View clinical trials related to Glaucoma.
Filter by:Glaucoma is a chronic and progressive optic neuropathy characterized by degeneration of ganglion cells and axons with loss of visual function. It is estimated that glaucoma, which is the second cause of preventable blindness in the world, affects nearly 60 million people worldwide. The most common type of glaucoma is primary open-angle glaucoma (POAG). POAG is a chronic progressive optic neuropathy with characteristic morphological changes in the optic nerve head and retinal nerve fiber. POAG, progressive retinal ganglion cell death and visual field loss are associated with these changes. Risk factors for POAG are age, race, high intraocular pressure (IOP), family history of glaucoma, thin central corneal thickness (CCT), high myopia. IOP is the only modifiable risk factor that we can control. For this reason, the priority in the treatment of POAG has always been to reduce IOP. In glaucoma, the essential point is to preserve the damaged ganglion cell layer and therefore the visual functions. In addition to clinical examination, visual field measurements that measure functions, optical coherence tomography (OCT) thickness measurements that measure anatomical changes, and optic nerve head parameters are the most reliable methods for both diagnosis and evaluation of the efficacy of treatment. Following the results of the visual field and OCT measurements, it will be tried to determine to what extent glaucoma damage can be ceased by the developed GlaucoT glaucoma treatment glasses. In this study, it is aimed to measure the effectiveness and safety of flicker light therapy, the effectiveness of which has been investigated in the treatment of Alzheimer's previously and has clinically significant results, with the GlaucoT glaucoma treatment glasses, which was developed to cease visual field loss with patient comfort at the forefront and at a lower cost.
It is commonly known that high eye pressure is associated with glaucoma. However, there is also a theory that poor circulation to the eye is a contributing factor. Therefore, if we can increase the flow of blood to the eye, we may be able to stop people losing vision from this disease. Phosphodiesterase inhibitors (for example sildenafil, tadalafil, Viagra®, Cialis®) are drugs used to improve blood flow to certain parts of the body. They are commonly used on an ad-hoc basis to treat erectile dysfunction, in addition to problems with blood circulation to the lungs, fingers and toes. The majority of previous work in this field has been completed using insensitive, poorly reproducible techniques such as colour doppler ultrasound. Since then, a new imaging modality able to image blood flow in blood vessels without the need for the injection of contrast has entered clinical use. This initial pilot study is designed as a proof-of-concept study to investigate whether we can measure detectable changes in the blood flow to the retina and choroid at the back of the eye following ingestion of a phosphodiesterase inhibitor medication by healthy and glaucomatous volunteers already taking this medication for erectile dysfunction.
Overall Objective: This study will assess whether an educational video is effective in increasing patient satisfaction with glaucoma surgery. 1. Investigate the impact of educational interventions on glaucoma patients' surgical satisfaction. 2. Investigate the post-operative satisfaction of rural glaucoma patients in county hospitals 3. Investigate the difference in postoperative satisfaction between urban and rural glaucoma patients in urban hospitals 4. Investigate other factors that influence postoperative glaucoma satisfaction.
This study aim to determine the feasibility of using a virtual reality (VR) headset (HTC Vive) to test the visual field. The VR headset test will be compared to a conventional visual field test, using the Humphrey Field Analyzer. The investigators will include 10 healthy patients without visual field defect, 10 patients with early glaucomatous visual field defect, and 10 patients with advanced visual field defect. Each patient will perform the conventional test twice and the VR headset test 4 times, divided in 3 visits within a 2 month period. The results of the tests (sensitivity thresholds) will be compared. The investigators hypothesize that the results of the conventional and VR tests will be similar.
Study Objective: To establish the substantial equivalence of the SOLX Gold Shunt to commercially available aqueous shunts, specifically the Ahmed™ Glaucoma Valve Model FP7, in the ability to reduce intraocular pressure (IOP) associated with glaucoma in eyes where medical and conventional surgical treatments have failed.