Clinical Research Directory

Effect of Vision Centers on Access to Eye Care and Eye Health Outcomes

The goal of this clinical trial is to evaluate the effect of vision centers on access to eye care and eye health outcomes in South Asia. The main questions it aims to answer are: 1. Do vision centers increase visits to eyecare centers? 2. Do vision centers increase spectacle ownership and wearing? 3. Do vision centers improve visual acuity of the population? Researchers will compare outcomes in communities randomized to have a vision center is established with communities randomized to delay establishment of a vision center. Outcomes will be assessed through population-based surveys at baseline and after two years as well as through hospital records collected throughout the study period.

Quality of Life in Presbyopic Patients Who Are Treated With Qlosi

The goal of this clinical trial is to determine how Qlosi™ (pilocarpine HCL ophthalmic solution) 0.4%impacts the quality of life of participants with presbyopia by using a battery of validated and investigator-developed instruments * Improvement in presbyopic symptoms as measured with the Near Activity Visual Questionnaire-Presbyopia (NAVQ-P) when using Qlosi™ at week 4 compared to baseline (continuous variable). * Improvement in presbyopic symptoms as measured with the Visual Quality of Life with Time Survey (VisQualT) questionnaire when using Qlosi™ at week 4 compared to baseline.

Filter Lenses for the Prevention of Migraine Attacks

The purpose is to investigate whether the Blue Cut for Night filter is better at reducing migraine compared to the FL-41 filter or a filter blocking light below 500 nm. A control group will use clear lenses without filter. This is a controlled, randomized and double-blind trial.