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Discover 7,028 clinical trials near San Diego, California. Find research studies in your area.
Showing 481-500 of 7,028 trials
NCT06678880
The goal of this clinical trial is to learn more about mood, sleep, and activity during menopause. The main question it aims to answer is: can mood and sleep dysfunction in menopause be improved by resetting misaligned circadian rhythm through one night of strategic sleep timing adjustment and two weeks of exposure to bright light at a certain time of day? Researchers will compare sleep timing (earlier vs. later) and bright white light exposure (morning or evening) to investigate the effect of melatonin levels on mood, sleep, and activity. Participants will 1) submit urine samples to measure melatonin levels, 2) be assigned to advance or delay their sleep for one night, 3) sit in front of a light box for 30 minutes per day (morning or evening) for 14 days, 4) complete questionnaires about their mood and sleep, and 5) wear a device that will measure their activity.
NCT06343350
In the United States, only 62% of the 37 million people with diabetes receive annual screening exams for diabetic retinopathy. One of the goals of the US Department of Health and Human Services Healthy People 2030 campaign is to increase diabetic retinopathy screening rates to 70.3%. Research indicates that low screening rates are associated with a variety of factors, including income levels, race and lack of access to care. Furthermore, because diabetic retinopathy frequently presents asymptomatically, non-adherence to screening results in postponed disease detection and a higher probability of vision loss. Currently, it is estimated that 9 million adults in the US are affected by diabetic retinopathy, and 1.8 million suffer from vision-threatening diabetic retinopathy. Importantly, the rates of vtDR vary greatly by race, with Hispanic individuals at 7.14% and Black individuals at 8.66%, compared to 3.55% in White individuals. Despite these alarming figures, the disease can be managed and vision loss can often be averted with early disease detection, thus highlighting the importance of increasing screening rates. A clear need exists for a diabetic retinopathy screening tool that can be deployed in primary care settings, addressing the shortage of specialist care and making screening more accessible to underserved populations. OPTDR01 will directly address these issues by providing accessible, high quality screening for diabetic retinopathy. OPTDR01 will automatically detect more than mild diabetic retinopathy (mtmDR) and vision-threatening diabetic retinopathy (vtDR) in diabetic adults who have not previously been diagnosed with mtmDR or vtDR.