View clinical trials related to Eye Diseases.
Filter by:Diabetic eye disease causes major vision loss in many Canadians and is costly. There are effective preventions and treatments for diabetic eye disease but they strongly depend upon regular screening in asymptomatic patients. The 2013 Canadian Diabetes Association (CDA) guidelines recommend annual screening by eye care professionals, either in-person or through interpretation of dilated pupil retinal photographs. Despite the benefits of screening, adherence to these guidelines is poor. Reasons include patient barriers, i.e. need for eye drops, time off work, wait times, and transportation issues. An option to minimize these barriers is to screen using a camera called non-mydriatic ultra-widefield (UWF) retinal imaging. This can be quickly done without eye drops on the same day as patients' regularly scheduled diabetes clinic visits. In this study, the investigators will compare the UWF camera to the usual screening approach recommended by the CDA. The investigators will invite 740 patients with diabetes due for eye screening to either be screened using the UWF camera on the day of their diabetes clinic visit or be screened by their usual eye care professional. The investigators' prediction is that same-day screening with UWF imaging will find more patients with diabetic eye disease who need treatment compared to usual screening.
The purpose of this study is to evaluate a new instrument that takes digital images of tear film (a thin film that coats the eye that is made up of oil and water). The investigators are interested in measuring how the thickness of the tear film varies through time. The goal is to develop a technique that may enable non-invasive evaluation of Dry Eye Disease for future clinical diagnosis.
This study will evaluate the safety and efficacy of a new eye drop formulation in patients with dry eye disease.
The purpose of this first-in-human study is to evaluate the safety, pharmacokinetics (PK) and pharmacodynamics of OPT-302 administered as monthly intravitreal injections for 3 months with and without Lucentis™ in patients with wet age related macular degeneration (AMD). This study will be conducted in two parts: Part 1 will comprise an open label, sequential dose escalation and Part 2 a randomized dose expansion. OPT-302 is a soluble form of VEGFR-3 comprising the extracellular domains 1-3 of human vascular endothelial growth factor receptor (VEGFR)-3 and the Fc fragment of human IgG1. It functions by binding and neutralizing the activity of vascular endothelial growth factor (VEGF)-C and VEGF-D on endogenous VEGFR-2 and VEGFR-3. VEGF-C and VEGF-D promote blood vessel development (angiogenesis) by binding and activating VEGFR-2 and VEGFR-3. VEGF-C is also a potent inducer of vascular permeability or leakage. Angiogenesis and vascular leakage are key hallmarks of wet AMD. Approved therapies for wet AMD include Eylea™ and Lucentis™ which block the activity of VEGF-A, but not VEGF-C or VEGF-D which are alternate members of the same family of molecules. VEGF-C and VEGF-D can stimulate blood vessel growth and leakage through the same pathway as VEGF-A (via VEGFR-2), as well as through pathways that are independent of VEGF-A (via VEGFR-3). Published studies have also indicated that VEGF-C and VEGF-D play an important role in mediating resistance to therapies that block VEGF-A such as Lucentis™ and Eylea™. Combination therapy with OPT-302 an anti-VEGF-A agent provides a more complete blockade of the VEGF family. This strategy targets functional redundancy in the VEGF pathway and mechanisms of 'resistance' or sub-response to VEGF-A inhibition.
Peribulbar anaesthesia for ocular surgery depends on the spread of local anaesthetic throught the orbit to be successful and has a relatively high failure rate. This study will examine a novel ultrasound guided approach to peribulbar anaesthesia which should extend the depostion of local anaesthetic by using a dual quadrant injection technique. The study will assess the feasibility of this technique, how successful it is and whether any obvious safety issues arise with its use.
Millions of people suffer from dry eye disease, causing symptoms such as redness, burning, feeling of sand or grit in the eye and light sensitivity. Dry eye disease occurs when your eyes do not produce enough tears or produce poor quality tears. This can happen for a number of reasons, including aging, hormonal changes in women and side effects of diseases or medications. It is now possible to objectively measure the degree of dry eye disease by collecting a tiny sample of tears from the corner of the eye and then measuring the amount of salt in the tears (termed osmolarity). We aim to establish the overall levels of raised and normal tear osmolarity in people presenting to the eye clinic with complaints of dry eye, and relate this to other factors such as symptoms, topical and nutritional medication and dry eye treatment.
The dysthyroid orbitopathy (DO) is a chronic disease, evolving during 2 to 3 years, with a hypertrophy and a variable degree of inflammation of the eyelid muscles, the oculomotor muscles and the orbital fat. If the diagnosis of OD is primarily clinical and laboratory, MRI is an additional contribution to the clinic, guiding the therapeutic management by detecting inflammatory lesions not found on clinical examination in 1/3 of cases. The three MRI sequences conventionally practiced ((T2, T2-fat-sat, T1) allow muscles signal analysis oculomotor abnormalities as well as the orbital fat. Compared to these sequences, the main advantage sequences DIXON is a faster acquisition. In addition, DIXON type of imaging overcomes most of these artifacts and to obtain a homogeneous fat removal.
The purpose of this study is to evaluate the efficacy of LME636 compared to vehicle in the reduction of ocular symptoms and to evaluate the safety and tolerability of LME636, when administered topically for up to 42 days, in subjects with severe dry eye disease.
Anti-VEGF agents are given for a variety of previously untreatable eye diseases. The last years indications for their use and consequently the number of patients needing treatment, have been increasing. Most patients require multiple injections. This has resulted in many eye departments administering thousands of injections per year, also at St Olavs University Hospital Trondheim. To cope with this increase in workload, it would be helpful if injections would be given not only by the physicians but also by the nurses. This study's objective is to compare efficiency, patient satisfaction and cost per patient of injections given by nurses and physicians.
Dry age-related macular degeneration (AMD) is a common cause for severe visual loss in the elderly and represents an unmet need. So far no treatment is available for geographic atrophy (GA), which represents the advanced dry form characterized by expanding areas of outer retinal atrophy with corresponding absolute scotoma. The foveal retina may be spared until late in the course of the disease, a phenomenon termed "foveal sparing". However, the disease process ultimately also involves the central retina leading to irreversible loss of central vision. While the natural history of eyes with GA has been extensively studied with regard to the entire atrophic area, morphology-function analyses for "foveal sparing" GA in particular are still missing. Such data are needed for various purposes including the future use in interventional pharmacological trials aiming to slow the progression of GA and to preserve the foveal retina. In this study, different imaging modalities for accurate detection and quantification of preserved foveal retinal areas will be assessed.