View clinical trials related to Photophobia.
Filter by:The goal of this study is testing LACRIACT® eye drops, a medical device, to see how well it works and if people can use it safely. The Investigators will study this in people who have dry eyes, some of whom wear contact lenses, and some who do not. To obtain data from 20 participants, the investigators will first screen 22 patients, as two of them may not meet the requirements. If someone quits the study, the Investigators will not replace them with someone else. A person can partecipate in the study if they meet certain criteria in the study plan, complete the entire treatment, and use eye drops correctly at least 80% of the time. The Investigators running the study might also include up to 10 people who wear soft contact lenses out of the 20 in total. This study will be conducted at a clinic in Italy.
Photophobia, the aberrantly increased sensitivity to light, is a common symptom in migraine patients and light discomfort is frequently found as a trigger for migraine attacks. In behavioral studies, planned exposure to light was found to reduce headache in migraineurs with photophobia, potentially by increasing habituation to this migraine trigger. Here, neurophysiological mechanisms of light exposure versus light deprivation therapy in migraine patients are investigated using functional magnetic resonance imaging (fMRI). Migraine patients and healthy controls receive light exposure therapy (Flash) and light deprivation therapy (Dark) for one hour daily on 7 consecutive days, in a crossover design with a wash-out period of three months. Study participants keep a diary including items on interictal and ictal photophobia, headache frequency and severity 7 days before, during, and 7 days after the interventions. One week before and one day after both interventions, fMRI using flickering light in a block design is applied. Functional activation is analyzed at whole-brain level and habituation of the visual cortex (V1) is modeled with the initial amplitude estimate and the corrected habituation slope.
This is a 6-visit, single-center, non-dispensing, randomized, single-masked, 5×5 crossover study. Subjects will participate in 6 scheduled over the duration of approximately 10.5 months.
This is a research study on Mindfulness-Based Cognitive Therapy for visual symptoms (MBCT-vision), to treat patients with debilitating symptoms of visual snow (VS) and is associated visual symptoms, severe light sensitivity (i.e. photophobia) and migrainous visual aura. Participants will receive an intervention of an 8-week MBCT course modified for visual symptoms, which will involve 8 weeks of once weekly group sessions and home practice between sessions.
After a head injury, many people find that exposure to light causes them increased discomfort. By measuring how the pupil in the eye constricts to flashes of red and blue light, this study will investigate whether this phenomenon is due to a change in the eye's sensitivity to light.
Pupillary dilation induced by mydriatic agents during Retinopathy of Prematurity exams can persist for hours. Despite regular use of eye protection for mydriatic-induced light sensitivity for infants, children and adults, eye protection after mydriasis has not been addressed in neonates. This study examines the use of eye patches to protect the dilated pupil from light exposure and their impact on vital signs and pain scores. prevents tachycardia, tachypnea and discomfort in neonates after ROP screening.
Approximately 9% of men and 18% of women suffer from migraine headaches. Almost all migraine sufferers report light sensitivity during a headache. Some people with migraine report that light can trigger their migraines and some people with migraine are light sensitive all of the time. The investigators have recently determined that certain colors of light are more likely to trigger migraines than other colors. In this study the investigators want to know if people who wear glasses that block these colors of light will have fewer migraine headaches.
The purpose of the study is to show the efficacy of a single dose of PRO-513 for treating subjects suffering moderate pain form a migraine attack, with or without aura. The study is also intended to show the effectiveness of PRO-513 for associated symptoms of nausea, photophobia, and phonophobia due to a migraine attack.