Active clinical trials for "Retinal Diseases"

Background: Autosomal recessive bestrophinopathy (ARB) is one of 5 blinding eye diseases caused by mutations in the gene BEST1. These diseases, collectively termed "bestrophinopathies" include ARB, Best vitelliform macular dystrophy (BVMD), adult-onset vitelliform dystrophy (AVMD), autosomal dominant vitreoretinalchoroidopathy (ADVIRC) and retinitis pigmentosa (RP) . Objective: To collect DNA/RNA and skin samples from individuals with ARB or other diseases due to mutations in the gene BEST1. These models will be used to identify and test therapeutic approaches to treating these diseases. Design: Study involves a one time donation of a skin punch biopsy and whole blood. Once the skin biopsy is obtained, skin fibroblasts will be isolated, which will be reprogrammed into iPSCs. RPE cells will be derived from the iPSCs

Background: - Some premature babies develop bronchopulmonary dysplasia (BPD) and retinopathy of prematurity (ROP). BPD and ROP are long-term chronic diseases of the lungs and eyes, respectively. BPD is associated with receiving mechanical ventilation to treat respiratory distress syndrome, and causes lung inflammation and scarring. ROP is caused by poor development of blood vessels in the eyes, and may lead to blindness. Because not all premature babies develop BPD or ROP, researchers want to study the genes that could be associated with these diseases. They will look at both premature infants and their parents to see if there is a genetic component to BPD and ROP. Objectives: - To study genes that may be associated with BPD and ROP. Eligibility: Premature babies born with a weight less than or equal to 1,250 grams. Parents of the premature babies. Design: Parents will answer questions about the mother s health and pregnancy. Delivery and medical information will be collected during the baby s hospitalization for the first month after birth. Parents will provide a saliva sample from the inside of the cheek. A saliva sample will also be collected from the baby within 28 days of birth. If the baby needs tracheal aspiration (removal of fluid from the throat), tracheal fluid samples will also be collected. Parents will have followup interviews about their child s health 6 months, 12 months, and yearly for up to 6 years after birth. This is a genetic study only. Treatment will not be provided as part of this study.

The purpose of this study is to study the impact of blood pressure on cognitive performance.

Clinically significant macular edema (CSME) is a thickening of the macula associated with the risk of visual loss, which increases its centre is involved. Functional evaluation of the macula relies on best corrected visual acuity; however, neural dysfunction in diabetic eyes appears before retinal thickening and visual loss. Retinal sensitivity decreases in eyes with CSME, but it is unknown whether it differs between eyes with and without centre thickening. Aim: To compare the reduction of foveal sensitivity in eyes with CSME, with and without centre thickening.

The purpose of this study is to validate a predictive model of diabetic retinopathy progression in patients with diabetes mellitus type 2 patients to clinically significant macular edema (CSME) needing treatment either photocoagulation or intravitreal injections (ITV) using non-invasive techniques.

The aim of the study is to find out prevalence and individual stages of Diabetic Retinopathy in patients with type 1 and type 2 DM verified based on complex ophthalmologic measurements in Slovak Republic. The outcome of the project will be epidemiology survey, prevalence of diabetic retinopathy (DR) and diabetic macular edema (DME) in relation to type and duration of diabetes mellitus and risk factors. Project will also identify genetic factors linked with the diseases.

The main objective of this observational study is to characterize and correlate functional and structural changes at the retinal level using the Retinal Leakage Analyzer (RLA) and the Optical Coherence Tomograph (OCT). To show if it is possible to use OCT as an indirect measurement of leakage, this study will check, in a primary analysis, for OCT changes between fluorescein leaking and non-leaking areas (identified by Retinal Leakage Analyzer). As a secondary objective, changes in RLA and OCT over time (between two consecutive visits) will be analyzed and characterized. The results of this study will be used exclusively for scientific purposes.

Prevalence of Diabetic Retinopathy in São José do Rio Preto-SP-Brazil Abstract Objective: To determine the prevalence and characteristics of diabetic retinopathy (DR) among patients from São José do Rio Preto-SP-Brazil . Local: Departamento de Retina e Vítreo do Hospital do Olho de Rio Preto (HORP) Methods: Design: population-based cross-sectional study. The study sample, of 710 patients was derived from the HIPERDIA (Diabetes and High-blood pressure social health care program) of São José do Rio Preto . All patients , known to have diabetes , underwent an eye examination by biomicroscope and indirect ophthalmoscope to check for any signs of DR through dilated pupils. Participants were also interviewed and examined to determine their demographic characteristics, medical conditions and the realization of previous fundoscopic eye examination. Statistical studies were done with t -Student test , Fisher test or chi-square test.

The objective of the study is to determine if CPAP applied within less than 15 min of life in the DR reduces the necessity of mechanical ventilation and surfactant during the first 5 days of life.

The purpose of this study is to determine what factors influence the visual outcomes of infants with severe retinopathy of prematurity (ROP) and to monitor the outcomes.