Active clinical trials for "Macular Degeneration"

Uveal Melanoma is the most common primary intraocular malignancy in adulthood. Eye preserving treatments can deliver equivalent life prognosis in the management of small and medium sized uveal melanomas, as compared to enucleation. Plaque radiotherapy has emerged as the most common eye-preserving treatment in the current management of uveal melanoma, but is complicated by visual loss in approximately 70% of patients at 10 years follow-up. Strategies for the prevention and early treatment of radiation retinopathy/maculopathy need to be developed to improve visual outcomes following plaque treatment. Ranibizumab (Lucentis) is the antigen binding fragment of a recombinant, humanized monoclonal antibody, which inhibits the activity of vascular endothelial growth factor A, a mediator in the development of choroidal neovascularization. Lucentis is commonly used in the eye for eye conditions such as age related macular degeneration. This study will investigate the possible benefit of Anti-VEGF therapy (Lucentis) in reducing the incidence of radiation complications following plaque radiation for uveal melanoma.

estimate the sensitivity of the HMP test in identifying visual field functional defects in subjects with CNV secondary to AMD

In the industrialised world age-related macular degeneration (ARMD) is the leading cause for legal blindness beyond the age of 50 years. Recent studies indicate that the amount and status of the macular pigment (MP) may play a central role in the development and progression of the disease. It has been demonstrated that the MP density can be increased by dietary supplementation. First results of MP density measurements with a modified confocal laser scanning ophthalmoscope show that this method allows to quantify the MP in a clinical setting. The aim of this study is to assess the peak MP density as well as the MP distribution in relation to the risk for ARMD. We will establish reference values for MP density distribution in a normal population and compare these to values obtained from patients with age related maculopathy in a cross-sectional study. For all MP density measurements we will use a modified scanning laser ophthalmoscope and dietary intake of macular pigment will be assessed using a Food Frequency Questionnaire. Clinical examinations will include ETDRS visual acuity, binocular ophthalmoscopy, colour fundus photography and autofluorescence imaging. The results of our study will help assess the relationship of macular pigment density and distribution with ARMD. Additionally, we will be able to identify patients with low MP density, and probably improve the early diagnosis of patients at high risk for developing ARMD. This will be the basis for dietary supplementation of lutein and/or zeaxanthin in patients with high risk for ARMD due to low macular pigment values.

The primary objective of this study is to assess the ability of the PreView PHP(study device)to detect newly diagnosed non-treated Choroidal Neovascularization (CNV)lesion associate with advanced Age-related Macular Degeneration (AMD) or Myopia and differentiate them from Intermediate AMD or Geographic Atrophy (GA)or patients with high Myopia with no CNV. This study secondary is to enhance NotalVision normative database.

The primary objective of this study is to assess the ability of the PHP & HPHP to detect newly diagnosed non treated Chorodial neovascularization (CNV) lesion associate with advanced age related Macular Degeneration (AMD) and differentiate them from Early/intermediate/GA AMD

Age-related macular degeneration (ARMD) affects older Americans and can lead to irreversible blindness. Although the cause if ARMD is unclear, it appears to be a condition that is affected by both genetic and environmental influences. The purpose of this study is to examine an Amish community to investigate genetic factors in the development of ARMD. Study participants will be 1,000 members, ages 50 and older, of the Old Order Amish community in Lancaster and Franklin counties in Pennsylvania. Each will undergo a 30-minute dilated eye exam during which an ophthalmologist or optometrist will take digital images of the macula and optic disc. Depending on the results of their eye exam, participants may be asked to give a blood sample as well. They will also complete a brief questionnaire about personal exposure related to occupation, sunlight and smoking.

To evaluate the relation of retinal microvascular characteristics to subclinical cardiovascular disease, clinical disease, and their risk factors in the Multi-Ethnic Study of Atherosclerosis (MESA) cohort.

A new fundus-guided microperimeter (MP-3S) has been developed by Nidek, Inc. to track the fundus of the patient and present stimuli in specific anatomically-defined locations. Furthermore, this tracking means that exactly the same locations can be tested on subsequent (follow-up) visits. The investigators will use a method called two-color perimetry to map rod and cone sensitivity on this device. With this technique, the sensitivity difference (blue-red) to chromatic test stimuli can be used to determine whether rods, cones or both photoreceptor systems mediate the threshold at a given location in the macula.

Purpose: To examine the genotypes associated with the peripheral retinal phenotypic features in patients with age-related macular degeneration documented with wide-field imaging. Design: Clinic-based case series study in Croatia. Participants: 160 patients >50 years of age known to have early or advanced AMD and 150 subjects >50 years of age without known AMD (controls) Methods: Both groups of patients were examined with ophthalmoscopy and OCT to confirm their classification. Posterior and peripheral fundus features were documented with Optos wide-field imaging (Optos P200MA, Optos Plc, Dunfermline, Scotland) and graded. DNA was extracted from blood samples and gene polymorphisms were evaluated for complement factor H (CFH) rs1061170 and rs1410996, age-related maculopathy susceptibility (ARMS2) rs10490924, high temperature requirement factor A1 (HtrA1) rs11200638, complement factor B (CFB) rs4151667 and rs641153, complement factor 2 (C2) rs9332739 and rs547154 and complement factor 3 (C3) rs2230199.

The study will enroll up to 30 AMD patients diagnosed with NV-AMD in at least one eye at the time of enrollment. At the Study Visit, fluid must be present in at least one eye of the subjects. If only one eye qualifies for enrollment, that will be assigned as the study eye. If both eyes are eligible, the study eye will be assigned according to a randomization schedule. Only one eye of each subject will be enrolled in the study. All subjects will be enrolled at 1 site in the United States. Subjects must meet all inclusion and no exclusion criteria.