Active clinical trials for "Eye Diseases"

This study is a longer-term follow-up study for patients who have been administered AAV2/5-OPTIRPE65 in the Phase I/II, open label, non-randomised, two-centre, dose escalation trial in adults and children with retinal dystrophy associated with defects in RPE65.

Purpose: The aim of the study was to compare the analgetic effect of two solutions of intracameral anesthesia in patients undergoing cataract surgery and assess the factors influencing the patients' postoperative activities. Methods: In this prospective, single-blind, randomized study, a group of 62 patients undergoing cataract surgery received Mydrane (Mydrane group) or a combination of 1% solution of lignocaine and 0.025% solution of adrenalin (reference group) as an intraocular anesthetic. The analgetic effect of these two anesthetic methods was evaluated using psychological tools - Visual Analog Scale for Pain (VAS Pain) and Brief Pain Inventory-short form (BPI) on the next day after the surgery.

The purpose of the present interventional study is to assess the changes in the therapeutic response, ocular manifestations of Graves' orbitopathy and quality of life during the first year after orbital radiotherapy. The main questions it aim to answer are: How effective is orbital radiotherapy used as first- or second-line treatment in patients with Graves' orbitopathy? How does the quality of life changes after orbital radiotherapy? Participants have active moderate-to-severe Graves' orbitopathy and are treated with low dose fractionated orbital radiotherapy for two weeks. During the follow-up period they undergo regular ocular examinations and fill out a disease-specific questionnaire.

Diabetic macular edema (DME) is one of the leading causes of visual impairment in patients with diabetes. Fluorescein angiography (FA) plays an important role in diabetic retinopathy (DR) staging and evaluation of retinal vasculature. However, FA is an invasive technique and does not permit the precise visualization of the retinal vasculature. Optical coherence tomography (OCT) is a non-invasive technique that has become popular in diagnosing and monitoring DR and its laser, medical, and surgical treatment. It provides a quantitative assessment of retinal thickness and location of edema in the macula. Automated OCT retinal thickness maps are routinely used in monitoring DME and its response to treatment. However, standard OCT provides only structural information and therefore does not delineate blood flow within the retinal vasculature. By combining the physiological information in FA with the structural information in the OCT, zones of leakage can be correlated to structural changes in the retina for better evaluation and monitoring of the response of DME to different treatment modalities. The occasional unavailability of either imaging modality may impair decision-making during the follow-up of patients with DME. The problem of medical data generation particularly images has been of great interest, and as such, it has been deeply studied in recent years especially with the advent of deep convolutional neural networks(DCNN), which are progressively becoming the standard approach in most machine learning tasks such as pattern recognition and image classification. Generative adversarial networks (GANs) are neural network models in which a generation and a discrimination networks are trained simultaneously. Integrated network performance effectively generates new plausible image samples. The aim of this work is to assess the efficacy of a GAN implementing pix2pix image translation for original FA to synthetic OCT color-coded macular thickness map image translation and the reverse (from original OCT color-coded macular thickness map to synthetic FA image translation).

The VITamin D and OmegA-3 Trial (VITAL; NCT 01169259) is a randomized clinical trial in 25,875 U.S. men and women investigating whether taking daily dietary supplements of vitamin D3 (2000 IU) or omega-3 fatty acids (Omacor fish oil, 1 gram) reduces the risk of developing cancer, heart disease, and stroke in people who do not have a prior history of these illnesses. This ancillary study is being conducted among participants in VITAL and will examine whether omega-3 fatty acids or vitamin D3, compared to placebo, reduce the incidence and/or progression of dry eye disease.

Background: - The Age-Related Eye Disease 2 Study (AREDS2) looked at two eye diseases. These were age-related macular degeneration (AMD) and cataracts. Participants in that study took supplement pills and some participants had additional pictures taken of their eyes. That study is now over. Researchers want to do a follow-up study after participants finish taking the pills, to see if they cause long-term effects on AMD. This study will be combined with follow-up visits of the AREDS2 study if possible. Objectives: - To learn more about the effect of oral supplements on AMD. Eligibility: - People who completed the AREDS2 study. Design: Participants will have up to 2 study visits over 6 18 months. Each visit will last up to 5 hours. The visits will be combined with annual follow-up visits in the AREDS2 study if possible. At each visit, participants will undergo an eye exam and photography. The eye exam includes testing sight, measuring eye pressure, and checking eye movements. To examine the inside of the eye, the pupil will be dilated with eye drops. Photographs of the inside of the eye may be taken during the eye exam and while the eyes are dilated. A contact lens may be placed on the eye briefly to look at the retina at the back of the eye.

In vivo confocal microscopy (IVCM) is a sensitive imaging tool for detecting dry eye-associated subclinical inflammation. Studies have previously shown that IVCM provides an in vivo metric to measure inflammatory changes in the central cornea. The objective of the current study is to assess inflammatory response changes in the peripheral cornea and the conjunctiva by analyzing epithelial immune cell density and morphology in these areas and then correlating the IVCM findings to clinical signs and symptoms to establish novel objective imaging biomarkers.

The purpose of the study is to observe lacrimal fluid condition (tear film break-up time) chronologically after a single dose of AL-43546 ophthalmic products（0.15%, 0.25% and vehicle）and 0.1% sodium hyaluronate ophthalmic solution and compare lacrimal fluid retention time between them.

The objective of this retrospective chart review is to evaluate the patient characteristics, treatment variations and efficacy of a second trial of Cyclosporine Ophthalmic Emulsion 0.05% therapy in chronic dry eye patients who were initially treated with Cyclosporine Ophthalmic Emulsion 0.05% but discontinued use after less than 12 weeks of treatment.

Background: Age-related macular degeneration (AMD) and cataracts are two eye diseases. They were studied in the Age-Related Eye Disease Study (AREDS2) and the AREDS2 Follow-On study. These studies followed the natural course of the diseases. They also provided data on the long-term effects of certain oral supplements on AMD. Objective: To study the long-term effects of oral supplements on several things. These include incidences of lung cancer, development of late AMD, cataract surgery, cognitive function, and cardiovascular events. Eligibility: Former AREDS2 and AREDS2 Follow-On participants Design: Participants will have 1 visit. It will include: An eye exam that tests how well participants can see, measures eye pressure, and checks eye movements. The pupil will be dilated with eye drops. Pictures will be taken of the retina and the inside of the eye. Participants will grip a device in their hand to measure their grip strength. A blood sample will be taken. This will be stored for future genetic research. Cells may be created from the sample. A small sample of skin will be taken. Sponsoring Institution: National Eye Institute