View clinical trials related to Retinitis.
Filter by:Our aim was to assess the role and usefulness of Hyperbaric oxygen therapy in a long lasting period, assessing its efficacy on rescuing retinal photoreceptors and preserving visual function in retinitis pigmentosa.
The main purpose of this study is to evaluate the preliminary safety and immunogenicity (ability of an antigen to provoke immune response in the human body) of CNTO 2476, administered subretinally, in participants with advanced retinitis pigmentosa (RP; disease of the eye that leads to loss of vision and blindness) with either light perception only (LP) or hand motion (HM).
The purpose of this study is to look at the safety and effectiveness of CNTF implants on vision in persons with retinitis pigmentosa, Usher type II & III, and Choroideremia. This research is being done because there are no effective therapies for people with these retinal degenerations. They are genetic disorders that affect our ability to see at night, and later cause tunnel vision and loss of central vision. Retinal degenerations affect the retina, a light sensitive layer of cells in the back of the eye. Slowly over time, these cells die and cause permanent loss of vision. The implant is a small capsule that contains human retinal pigment epithelium cells. These cells have been given the ability to make CNTF and release it through the capsule membrane into the surrounding fluid. This study will look at the effect of the implant on vision loss by retinitis pigmentosa, Usher type II & III, and Choroideremia. In this study, two different CNTF dose levels will be used: a high dose and a low dose in one eye, as well as a sham (or placebo) surgery in the other eye.
The purpose of this study is to look at the safety and effectiveness of CNTF implants on vision in persons with retinitis pigmentosa, Usher type II & III, and Choroideremia. This research is being done because there are no effective therapies for people with these retinal degenerations. They are genetic disorders that affect one's ability to see at night, and later cause tunnel vision and loss of central vision. Retinal degenerations affect the retina, a light sensitive layer of cells in the back of the eye. Slowly over time, these cells die and cause permanent loss of vision. The implant is a small capsule that contains human retinal pigment epithelium cells. These cells have been given the ability to make CNTF and release it through the capsule membrane into the surrounding fluid. In this study, two different CNTF dose levels will be used: a high dose and a low dose in one eye, as well as a sham (or placebo) surgery in the other eye.
Using local immune suppression, the trial seeks evidence for the hypothesis that autoimmunity plays a role in the pathomechanism of retinitis pigmentosa.
Investigate whether blind subjects that fulfil the patient criteria provided with a Retinal Implant are able to differentiate between simple patterns like horizontal bar, vertical bar and cross.
Investigational Phase of the Study: The objective of this feasibility study is to evaluate the safety and utility of the Argus II Retinal Stimulation System in providing visual function to blind subjects with retinitis pigmentosa. Post-Approval Phase of the Study: To collect post-approval data in order to monitor the ongoing safety and reliability of the Argus II System
The National Ophthalmic Disease Genotyping and Phenotyping Network (eyeGENE(R)) is a genomic medicine initiative created by the National Eye Institute (NEI), part of the National Institutes of Health (NIH), in partnership with clinics and laboratories across the vision research community. The core mission of eyeGENE(R) is to facilitate research into the causes and mechanisms of rare inherited eye diseases and accelerate pathways to treatments. This study collects DNA samples from patients with inherited eye diseases to facilitate research to identify genetic factors responsible for these conditions. Nearly 500 genes that contribute to inherited eye diseases have been identified. As a result, gene-based therapies are being pursued to treat eye genetic diseases that were once considered untreatable. Physicians in collaborating institutions will recruit patients to participate in the study. Patients will provide a blood sample and undergo a standard eye examination. The blood sample and clinical information will then be sent to the NEI for testing, processing and storing in the biorepository. Patients are given the option to receive results back and/or to be re-contacted in the event of future clinical studies. Information supplied to the testing laboratories includes a unique identification number, the patient gender, and the patient date of birth. The stored samples are available to researchers along with information about the patient's disease, but without patient identifiers.
The purpose of this trial is to determine whether lutein in addition to vitamin A will slow the course of retinitis pigmentosa.
The long-term goal is to show that retinal transplantation can help to prevent blindness and to restore eyesight in patients with the inherited disease retinitis pigmentosa.