View clinical trials related to Retinitis.
Filter by:Retinitis pigmentosa is a genetically disease consisting of progressive retinal degeneration starting in the rods. Its prevalence is 1:4000 people and is the fourth most common blinding disease in Israel in 2004 [7% of all blindness]. The investigators treated a non-progressive form of the disease [Fundus Albipunctatus] by oral therapy of the food supplement made from alga Dunaliella Bardawil composed of approximately 50% 9-cis β-carotene. The alga Dunaliella Bardawil accumulates high concentration of β -carotene when grown under appropriate conditions. The β -carotene of the alga is composed of approximately 50% of all-trans - β carotene and 50% 9-cis β -carotene. The 9-cis β -carotene has been shown to be a precursor of 9-cis retinoic acid both in-vitro in human intestinal mucosa and in-vivo in a ferret, perfused with 9-cis b-carotene. The night vision, as measured objectively by electroretinography (ERG) more than doubled in six patients tested following treatment. The visual field was also improved significantly. In a more recent study the investigators treated 29 retinitis pigmentosa patients with the 9-cis b Carotene algae Dunaliella Bardawil in a double masked placebo control cross over trial. Significant improvement in retinal function was recorded in 34% of the patients.
Retinitis Pigmentosa (RP) patients are interested in trying alternative therapies to attempt to slow, halt or reverse the retinal disease process, and claim success with some approaches such as acupuncture, but this potential treatment has not been put to the test of objective, rigorous scientific study conducted in western society. In this pilot study, the investigators aim to evaluate an acupuncture treatment tailored to the RP population for its feasibility to improve visual function, specifically visual field and dark adaptation. The study results may provide a basis for eye care providers' recommendations to RP patients regarding whether to consider acupuncture as a potential treatment modality. If our hypotheses regarding improvements in vision beyond typical test variability are supported, our future research goals include the conduct of a larger clinical trial with involving randomization and a placebo control for acupuncture in RP.
This study will be an initial proof of concept study, to evaluate safety and efficacy of a prototype suprachoroidal retinal implant
The purpose of this study is to evaluate the short-term safety and efficacy of a single intravitreal injection of autologous bone marrow stem cells in patients with retinitis pigmentosa.
The purpose of this study is: - To evaluate whether 7-day treatment with oral QLT091001 can improve visual function in RP subjects with an autosomal dominant mutation in RPE65. - To evaluate duration of visual function improvement (if observed) in RP subjects with an autosomal dominant mutation in RPE65 after 7-day treatment with oral QLT091001. - To evaluate the safety of oral QLT091001 administered once daily for 7 days in RP subjects with an autosomal dominant mutation in RPE65.
The purpose of this study is to determine the feasibility and safety of adult human bone marrow-derived mesenchymal stem cells by intravitreal injection in patients with retinitis pigmentosa.
This clinical trial is a single-site, 30 patient study for participants who have early stage retinitis pigmentosa, or Usher syndrome (type 2 or 3). Funding Source - FDA OOPD and Foundation Fighting Blindness.
The purpose of this study is: - To evaluate the safety of up to 3 additional courses of oral QLT091001 administered once daily for 7 days in subjects treated previously with a single 7-day course of QLT091001 in Study RET IRD 01 - To evaluate whether up to 3 additional courses of oral QLT091001 administered once daily for 7 days can maintain or improve visual function.
To evaluate the safety and tolerability of ascending doses of subretinal injections of SAR421869 in participants with Usher syndrome type 1B. To evaluate for possible biological activity of SAR421869.
Patients who are legally blind, caused by retinal degeneration of photoreceptor rods & cones (e.g. Retinitis pigmentosa), receive a subretinal implant to restore vision partially.