Refractive errors

Researchers are testing a new device called SmartEyes that measures refractive errors, which are vision problems like nearsightedness. The study involves 200 children and teens aged 6 to 17 who need eye exams. The trial compares SmartEyes with standard equipment and subjective re…

This study checks if a Turkish version of the DDIVAT digital vision test gives the same results as the standard Snellen eye chart. About 200 Turkish-speaking adults, with or without glasses, will take both tests. No drugs or procedures are involved, and there are no risks.

After cataract surgery, the membrane holding the artificial lens can turn cloudy, blurring vision. The standard fix is a quick laser procedure called Nd:YAG capsulotomy, but doctors disagree on whether it shifts the lens. This study measures the lens position in 80 people using t…

This study follows 1,000 preschool children (ages 0-6) with refractive errors like nearsightedness, farsightedness, or astigmatism. Researchers aim to map how these conditions progress, identify related health issues, and find the best ways to correct vision early. The goal is to…

This study looks at why many people in rural Assam who are referred for eye care don't make it to the hospital for treatment. Researchers will test new ways to help patients complete their referrals, like providing transport and reminders. The goal is to increase the number of pe…

This study will measure how pupil size and eye shape affect visual quality in 300 people with normal eyes or after refractive surgery. Researchers will use questionnaires and special instruments to track symptoms and eye measurements. The goal is to better understand what influen…

This study will check the eyes of 3,000 people in Xinxing County, including schoolchildren, seniors, and people with diabetes. The goal is to measure how common vision problems like nearsightedness and cataracts are, and how well they are being treated. Participants will have sim…

This study looks at how the length of the eye and the amount of nearsightedness or farsightedness relate to the health of the optic nerve and surrounding layers. Researchers will use a special camera (OCT) to take detailed images of the eye in 266 adults. The goal is to better un…