View clinical trials related to Refractive Errors.
Filter by:The purpose of this study was to evaluate visual acuity at distance when wearing DDT2 contact lenses compared to Acuvue Moist contact lenses.
The aim of this prospective study is to evaluate the clinical performance of habitual wearers of methafilcon A toric lenses after a refit with fanfilcon A toric lenses for 1-month of daily wear.
The aim of this prospective study is to evaluate the clinical performance of habitual wearers of methafilcon A aspheric lenses after a refit with fanfilcon A sphere lenses for 4 weeks of daily wear.
The study is a 2-phase, prospective, open-label, comparative (phase II) study design that was chosen for the purpose of optimizing the Cheetah settings (phase I), and evaluating the Cheetah system quality of LASIK flap (phase II).
The purpose of this study is to compare visual acuity between two daily disposable contact lenses.
This clinical trial will document the feasibility of the Apioc lens design by assessing which lens shape parameters yield successful on-eye-fit and movement of the Apioc contact lens design and evaluate the subjectively-reported comfort of the Apioc contact lens design.
The objective of this clinical study is to evaluate the safety and effectiveness of subepithelial implantation of the Allotex TransForm corneal allograft (TCA) for improving near vision in presbyopic subjects.
This study is planned to test an educational intervention promoting the use of spectacles among secondary school children. It is based on the hypothesis that educating teachers, parents and children about the importance of wearing spectacles has the potential to increase spectacle wear among children.Reasons for non-compliance towards spectacle use will be explored and educational intervention will be planned considering these reasons. Educational intervention will increase awareness about the importance of spectacles use and reduce the barriers towards spectacle use.Reducing barriers will increase compliance towards spectacles use which will ultimately prevent the avoidable visual impairment.
Pediatric eye patients receive infrared photoscreener screening and skiascopy as a part of routine examination to compare ability to detect amblyopia risk factors.
The development and validation of a concise, practical, on-line, self-administered, self-archiving, and self-scoring PRO questionnaire for routine clinical use in refractive surgery is the primary study objective. Secondary objectives are to gather outcome data from patients before and after surgery in each of the following domains comprising key elements of vision related quality of life: spectacle dependence; quality of vision; eye comfort; freedom; emotional well-being; and overall satisfaction with the results of surgery. Patients undergoing refractive surgery at Moorfields Private Outpatient Clinic will be enrolled in the study in the validation phase.