View clinical trials related to Macular Degeneration.
Filter by:Background: Age-related macular degeneration (AMD) affects the macula in the eye. This is the central part of the retina. It is needed for sharp, clear vision and activities like reading and driving. AMD is the leading cause of vision loss in Americans 60 years of age and older. An advanced form of AMD is called geographic atrophy or GA. It happens when light-sensitive cells in the macula die so much that central vision decreases. Objective: To learn more about geographic atrophy associated with age-related macular degeneration. Eligibility: Adults at least 55 years old with a certain kind of GA. They must be enrolled in study 08-EI-0102, 08-EI-0169, 08-EI-0043, 12-EI-0042, or 11-EI-0147 but no other studies. Design: Participants will be screened with medical history, physical exam, and an eye exam. Participants will have study visits every 3 months for 15 months, then every 6 months. They will be in the study almost 4 years. Visits will last about 8 hours. At each visit, participants may have: - Medical and eye history. Participants will answer questions about their general health and eye health. They may answer written questions about how their eye problems affect their life. - Eye exam and photographs. Eye pressure will be measured and eye movements will be checked. Pupils will be dilated with drops. The thickness of the retina will be measured and photos of the eye may be taken....
The primary purpose of this study was to evaluate the safety and exploratory efficacy of SF0166 Topical Ophthalmic Solution in patients with Neovascular (wet) Age-related Macular Degeneration (AMD).
This pilot study will evaluate the visual response to infrared (IR) in humans after dark adaptation. The investigators plan to determine which wavelength and intensity the human eye is most sensitive too, using a broad spectrum light source and wavelength-specific bandpass filters. The investigators will then evaluate the electrophysiologic response in healthy humans to IR, followed by studies in those with specific retinal diseases. The long-term goal of this research is to better understand the role that IR plays in visual function, and whether this can be manipulated to allow for vision in certain retinal pathologies that result from loss of photoreceptor cells. The investigators central objective is to test the electrophysiologic response to IR in the dark-adapted retinal and visual pathways. The investigators central hypothesis is that IR evokes a visual response in humans after dark adaptation, and the characteristics of this response suggest transient receptor potential (TRP) channel involvement. The investigators rationale is that a better understanding of how IR impacts vision may allow for an alternative mechanism for vision in a number of diseases that cause blindness from the degradation or loss of function of photoreceptor cells. The investigators will test the investigators hypothesis with the following Aims: Aim 1: To determine the optimal IR wavelength for visual perception in dark-adapted human participants. The investigators hypothesize that the healthy human eye will detect IR irradiation, with a maximum sensitivity at a specific wavelength. Using a broad-spectrum light source with wavelength-specific bandpass filters, the spectral range of visual perception to IR will be evaluated. The same will be done on colorblind participants. Aim 2: To test the electrophysiologic response to IR in healthy humans after dark adaptation. The investigators hypothesize that IR will elicit an amplitude change on electroretinography (ERG) and visual evoked potential (VEP) responses after dark adaptation in healthy human participants. Participants will be tested with both test modalities to evaluate their response to IR. Aim 3: To test the electrophysiologic response to IR after dark adaptation in humans with certain retinal diseases. Participants with retinitis pigmentosa, age related macular degeneration and congenital stationary night blindness, will be tested. Results will be compared to baselines and to those of healthy participants. The investigators hypothesize that there will be a response to IR on ERG and VEP, which will provide clues to the retinal cell layer location of the response to IR and the nature of potential TRP channel involvement.
This study is a Phase I/II , open label,non randomized, prospective study to determine the safety of human embryonic stem cell derived Retinal pigmented epithelium (hESC RPE) sub retinal injections versus hESC RPE seeded on a polymeric substrate implanted in the sub retinal space,
The treatment of neovascular age-related macular degeneration (ARMD) is a major issue of public health. The therapeutic arsenal has widely grown throughout the years with the emergence of intra-vitreous anti-angiogenic treatments, under different surveillance protocols. The "PRN" surveillance (pro re nata: an on-demand treatment with monthly follow-up) allows a faster re-injection in case of neovascular relapse in order to maintain the best visual acuity. This therapeutic protocol is guided by the sub-retinal neovascular signs of activity. The monitoring is done during common practice via OCT B scans showing indirect signs of neovascular activity (exudation signs). OCT retinal imaging has been recently enriched with new programs allowing the visualization of sub-retinal neovessels without the use dyes (OCT angiography). The OCT angiography is automatically done by a program using standard OCT sections. During the monitoring of a patient using the OCT A, the signs of renewed neovascular activity are represented by an "arterialization" or the development of an arteriole network of the neovessel with the reappearance of a hyper reflective flow after a neovascular regressive phase. Indeed, the visualization of neovessels during the monitoring by Angio-OCT may lead to therapeutical modifications (anticipation of the injections). Knowing that the injection time-table of ARMD patients treated with anti-angiogenics is determined by sub-retinal neovascular signs of activity. This activity is evaluated during routine clinical practice by very specific signs, observable on OCT B scans. The hypothesis of this study is that the search of activity sins on the Angio-OCT, a new technic of image analysis performed on the OCT, may modify this injection time-table, with an impact of the patient's visual acuity.
To evaluate the safety and tolerability of LKA651 in patients with macular edema from diabetic macular edema (DME), neovascular age-related macular degeneration (AMD), or retinal vein occlusions (RVO)
This study will evaluate the safety and characterize the systemic pharmacokinetics (PK) of free and vascular endothelial growth factor (VEGF)-bound abicipar following single and multiple intravitreal injections of abicipar pegol in treatment-naïve patients with neovascular age-related macular degeneration (AMD).
This is an open-label, Phase 1 single-center study in approximately 40 subjects who have 1 eye with intermediate AMD, including a high-risk drusen without geographic atrophy (GA) subgroup and a noncentral GA subgroup. Eligible subjects will receive 40 mg of elamipretide administered as a once daily 1.0 mL subcutaneous injection for 12 weeks.
Several studies during the last years reported the involvement of anti-retinal autoantibodies in ocular disorders, such as AMD. These studies support the growing evidence of an immunological involvement in the pathogenesis of AMD. In the planned trial it is planned to enroll 70 subjects, i.e. 50 subjects with neovascular AMD and 20 healthy volunteers. The investigators will evaluate the change from Baseline (Visit 1) in BCVA score at Week 12 (visit 4) in the study eye of nAMD patients treated with Ranibizumab. Neovascular AMD patients (group 1) will be accompanied for 6 months and blood samples will be collected at baseline and monthly until Visit 7 for analysis of antibody profiles. Healthy volunteers (group 2) will be enrolled and a blood sample will be collected once for analysis of antibody profiles. Antibody profiles of all study participants will be analysed to address questions as defined in the outcome measures.
A device has been developed that has eye trackers integrated within the Head Mounted Display (HMD) and can remap text and images around the scotoma in real time to prevent information loss from a central scotoma. It can also carry out other types of image processing such as contrast enhancement and image magnification. The aim of this study is to assess the efficacy of this device on the visual performance of participants suffering from central vision loss, with and without remapping