View clinical trials related to Refractive Errors.
Filter by:The aim of this study is to compare the short-term clinical performance of two sphere contact lenses.
This study aims to determine if Total30 lenses for astigmatism can be successfully fit in participants who are heavy digital device users.
The purpose of this study is to assess the clinical performance of TOTAL30 for Astigmatism (T30fA) soft contact lenses with Biofinity Toric soft contact lenses.
The purpose of this clinical trial is to evaluate the effect of light-emitting diodes (LEDs) with a continuous spectrum of 430-780 nm for lighting in the classroom on myopia prevention among children in Grades 2 and 3.
In a randomized controlled trial, we will establish whether early glasses for high refractive error at age one reduce the development of amblyopia between age one and four. As a secondary outcome early literacy will be compared in groups with and without glasses.
Primary objective of our study is the development and validation of an application for smart-TVs for the self-examination of the distant visual acuity of patients diagnosed with macular edema.
To assess the improvement in myopia with phototherapeutic intrastromal corneal collagen cross-linking (PiXL) without epithelial debridement (epi-on) in high oxygen environment for low grade myopia. The study compares two 3.5-mm central ring-shaped zone protocols; 10 min illumination time vs 16:40 min illumination time.
Glaucoma is a blinding eye disease increasingly common in older adults, particularly in African Americans, and often diagnosed late in the disease course. It is essential to develop novel health care models, utilizing telemedicine, to improve the ability to detect glaucoma at an earlier stage, and to provide a platform to manage this disease in community-based clinics so that further vision loss is prevented. Our goal is to improve the quality and accessibility of glaucoma detection and management among a vulnerable and at-risk segment of our population.
The purpose of this study is to determine if repeated low-level red-light therapy can slow myopia progression in Chinese schoolchildren.
There is a great need for precise and repeatable measurements of the choroidal thickness. Including the diurnal physiological changes, accommodation and refractive error impact on those measurements.