Contrast sensitivity

DIAGNOSTIC_TEST7 trials

Sponsors

AKiba Ryutaro, Rayner Intraocular Lenses Limited, University of Rhode Island, Siriraj Hospital, Democritus University of Thrace

Conditions

AgingAlzheimer DiseaseAphakiaCataractCognitive ChangeDiabetic Retinal DiseaseHealthy volunteer Healthy volunteerLow Vision Aids

Phase 2

Color lens design for normal subjects

RecruitingJPRN-jRCTs032230502

AKiba RyutaroHealthy volunteer Healthy volunteer

Start: 2023-12-11Target: 10Updated: 2025-07-18

Unknown Phase

A Multi Focal Visual Outcome Study Using Different Near Additions

TerminatedNCT00960700

Rayner Intraocular Lenses LimitedAphakia, Cataract

Start: 2009-09-30End: 2011-08-31Updated: 2013-02-08

Atlas of Retinal Imaging in Alzheimer's Study

CompletedNCT03862222

University of Rhode IslandAging, Alzheimer Disease, Cognitive Change +2

Start: 2019-12-16End: 2025-05-31Updated: 2025-06-05

Effect of Multifocal Intraocular Lens on Contrast Sensitivity in Primary Angle-Closure Patients

CompletedNCT04972435

Siriraj HospitalPrimary Angle Closure Glaucoma, Primary Angle Glaucoma Closure Suspect, Senile Cataract

Start: 2014-01-02End: 2015-12-30Updated: 2021-07-30

Comparison of Premium Monovision and Bilateral Implantation of Trifocal Diffractive Intraocular Lenses

CompletedNCT05494177

Democritus University of ThraceCataract, Presbyopia, Refractive Errors

Start: 2022-08-01End: 2023-03-01Updated: 2023-06-18

Comparative Effect of Cylindrical Lenses Verses Spherical Equilient on Contrast Sensitivity

Active, not recruitingNCT06407336

Superior UniversityLow Vision Aids

Start: 2023-10-01End: 2024-09-01Updated: 2024-05-09

Longitudinal Natural History Study of Retinal Function in Eyes of Patients With Diabetes

Not yet recruitingNCT07270133

Jaeb Center for Health ResearchDiabetic Retinal Disease

Start: 2026-05-02End: 2032-12-01Target: 450Updated: 2026-04-01