View clinical trials related to Eye Diseases.
Filter by:Dry eye disease is related with oxidative stress at the ocular surface. GSH is one of the key factor of protect from oxidative stress. To evaluate thiol status of ocular surface cells by monitoring GSH concentration, we can evaluate the severity of dry eye.
This study will evaluate and provide standard treatments for people with various eye conditions. It will provide a resource for enrollment into new research protocols throughout the Eye Institute and will allow institute specialists the opportunity to maintain their expertise and gain additional knowledge of the course of various eye disorders. The information obtained will allow for the evaluation of standard treatments and may lead to ideas for future research. People with diagnosed or undiagnosed eye disease and first-degree relatives of people with a genetic or developmental eye disease may be eligible for this study. Participants are evaluated and treated in the National Eye Institute. Blood or other tissue samples (e.g., urine, stool, hair, saliva or cheek swab) may be collected for future laboratory studies.
Orbital Venous flow study in patients with Grave's Orbitopathy in different manifestation forms and stages, made with Color Doppler Imaging
The purpose of this study is to evaluate the safety and tolerability of INS365 Ophthalmic Solution when applied topically as eyedrops in patients with mild to moderate dry eye disease.
To evaluate the efficacy and safety of INS365 Ophthalmic Solution when applied topically in patients with moderate to severe dry eye disease.
This study will test and compare computerized and paper versions of eye questionnaires. Questionnaires are used in medicine to gain a better understanding of how a disease can impact a person's quality of life. Computerized versions of such questionnaires are often as good as or better than paper versions, but there has been no direct comparison of the two. This study may help in the development of eye questionnaires used to understand symptoms and monitor patients in clinical trials. People 21 years of age and older with ocular surface disease (OSD) and matched control subjects without OSD may be eligible for this study. All participants undergo the following procedures: - Medical and eye history. - Vision test and examination of the front part of the eye. - Tear measurement: A small piece of paper is placed on the surface of the eye to measure the amount of tears produced. The consistency of the tears is measured by looking at how fast they evaporate from the surface of the eye. - Completion of either paper-based or computer-based version of a questionnaire 15 minutes after the eye examination and completion of the other version within 1 week at home. (Subjects who complete the paper version in the clinic are told how to access the computer version online at home or on a library computer; those who complete the computer version in the clinic are given a paper version to take home.)
Efficacy study of ecabet ophthalmic solution in dry eye disease
This study will allow National Eye Institute (NEI) doctors the opportunity to examine people with eye disease, whether the diagnosis is known or not, to determine if they are eligible for other NEI research studies. No treatment is offered in this study. People of all ages with various eye conditions, including genetic conditions, eye movement disorders, inflammatory eye diseases, retinal diseases and external eye diseases, may be eligible for this study. Participants undergo various tests and procedures to diagnose or evaluate their eye disease. The procedures may include the following: - Personal and family medical history - Physical examination and blood tests, including genetic testing. - Eye examination with dilation to measure visual acuity and eye pressure and to examine the front and back parts of the eye. - Questionnaire about vision and daily activities. - Conjunctival swab or lacrimal bland biopsy, or both: A sample of cells from the eyes is collected by swabbing the surface of the eye or by surgically removing a small sample of the surface of the eye or tear gland. - Electroretinogram to examine retinal function: The subject sits in the dark with his or her eyes patched for 30 minutes. The patches are removed, the surface of the eyes is numbed, and contact lenses that can sense signals from the retina are placed on the eyes. The subject then watches flashing lights. - Fluorescein angiography to examine the blood vessels in the eye: A dye is injected into a vein in the arm. The dye travels through the veins to the blood vessels in the eyes. A camera takes pictures of the dye as it flows through the blood vessels. - Optical coherence tomography to measure retinal thickness: A machine used to examine the eyes produces cross-sectional pictures of the retina. - Microperimetry to test how sensitive different parts of the retina are to changing levels of light. The subject sits in front of a computer and presses a button when he or she sees a light on the screen. - Oculography to record eye movements: Eye movements are measured by contact lenses or goggles that the subject wears while watching a series of spots on a computer screen.
The purpose of this project is to test two different types of health messages, one that is developed for a specific group (targeted) and the other that is more personalized to individuals (tailored), to see which is better at changing how often people have their eyes examined. We hypothesize that people who get the tailored messages will be more likely to get a dilated eye exam than people who receive the targeted messages.
The goal of this research is to evaluate and compare the effectiveness of Systane® versus Optive™ on aqueous tear film stability in patients with a diagnosis of Dry Eye Syndrome and to determine the possible application for this product in the future. Systane® is marketed as over-the-counter tear lubricating therapy in the United States under the FDA monograph.