Clinical Trials for Refractive Errors

Clinical Data Collection of Myopic Patients After PTK-PRK With CZM MEL 90 Excimer Laser

NCT ID: NCT06996353

This clinical trial is focused on understanding how well a specific eye surgery called PTK-PRK works for people with myopia (nearsightedness) and astigmatism. The researchers want to see if the pre...

Eye Health Intervention Study in Upper Manhattan

NCT ID: NCT06112431

The Eye Health Intervention Study in Upper Manhattan (EYES-UM) aims to improve eye care for adults aged 40 and older who may not have easy access to eye health services. This study will provide eye...

Evaluation of Delefilcon A Contact Lenses

NCT ID: NCT06884202

This clinical trial is testing a new type of contact lens called delefilcon A, specifically looking at how well these lenses fit people with refractive errors, such as myopia (nearsightedness). The...

Investigation of the Accuracy of an Automated Refractor to Provide Well-tolerated Eyeglass Prescriptions

NCT ID: NCT06883032

Air Optix Plus HydraGlyde Multifocal Daily/Extended Wear Contact Lenses

NCT ID: NCT05886894

Air Optix Extended Wear Contact Lenses

NCT ID: NCT05886881

Correlation Between Preoperative Refraction and Anterior Segment Parameters With ICL Vault

NCT ID: NCT05670626

This clinical trial is studying how certain factors before surgery can affect the outcome of a specific eye procedure called ICL implantation, which is used to correct vision problems like high myo...

Real-World Study of Myopia Prevention and Control in Children

NCT ID: NCT06849895

This clinical trial is looking at ways to prevent and control myopia, also known as nearsightedness, in children. The study will involve around 15,000 primary school students in Shanghai, China, an...

Seeing to Learn in Sierra Leone

NCT ID: NCT06065631

The "Seeing to Learn in Sierra Leone" trial is studying how providing free eyeglasses can help students aged 12-15 years who have trouble seeing clearly due to uncorrected vision problems, also kno...

To Study the Effects of Refractive Surgery on OCT Measurements in the Eye

NCT ID: NCT05856786

This clinical trial is looking at how corrective eye surgeries, like Lasik, affect a specific eye test called optical coherence tomography (OCT). This test is important for checking the health of t...

Visual Outcomes After Extended Depth of Focus Intraocular Lens Implantation with and Without Digital Assistance

NCT ID: NCT06460389

This clinical trial is looking at how well patients can see after receiving a special type of eye lens called an extended depth of focus intraocular lens. Researchers want to compare the results be...

Correcting Myopia Among Secondary School Children to Increase Academic High School Attendance Rates in Rural Communities

NCT ID: NCT04077086

This clinical trial is studying the impact of providing free glasses to children in rural China who are short-sighted, with the goal of improving their chances of continuing their education in acad...

A Clinical Trial to Evaluate the Vision Correction Safety and Efficacy of MSiHy Silicone Hydrogel Soft Contact Lens

NCT ID: NCT06716385

This clinical trial is looking at a new type of contact lens called "MSiHy Silicone Hydrogel Soft Contact Lens" to see how safe and effective it is for correcting vision problems like myopia (nears...

A Clinical Trial to Evaluate the Vision Correction Safety and Efficacy of DSiHy Silicone Hydrogel Soft Contact Lens

NCT ID: NCT06716372

This clinical trial is looking to evaluate the safety and effectiveness of a new type of soft contact lens called "DSiHy Silicone Hydrogel Soft Contact Lens" for people with vision problems like my...

Corneal Elastography and Patient Specific Modeling

NCT ID: NCT03030755

This clinical trial is focused on improving how we measure and understand the cornea, which is the clear front part of the eye. Specifically, it aims to develop new tools and computer simulations t...

Post-market Clinical Follow-up Study of Alcon PRECISION1™ Spherical and PRECISION1™ for Astigmatism Soft Contact Lenses

NCT ID: NCT06462456

Clinical Investigation for a Multifunction Ophthalmic Measurement Device

NCT ID: NCT06565091

This clinical trial is looking at a new device that can measure various aspects of eye health and vision. The goal is to see how well this device works for diagnosing and managing conditions like p...

Cognitive Level Enhancement Through Vision Exams and Refraction

NCT ID: NCT05458323

This clinical trial is looking at how providing free glasses to older adults in Hyderabad, India, can improve their overall quality of life. Specifically, the study is focused on people aged 60 and...

Correction of Refractive Error Surprises After Cataract Surgery in Adults

NCT ID: NCT06379477

This clinical trial is focused on understanding and preventing "refractive surprises" that can occur after cataract surgery. A refractive surprise happens when patients do not achieve the vision co...

Community Intervention and Demonstration Area Construction

NCT ID: NCT05715424

This clinical trial is focused on understanding and improving the eye health of children and adolescents in China, specifically looking at the common vision problem known as myopia, or nearsightedn...