Clinical trials: Dysphotopsia
Negative Dysphotopsia
Comparison of Haptic Orientation in Negative Dysphotopsia
Previous studies attempted to understand the dysphotopsia phenomenon by examining intraocular lens type, anterior capsule depth, iris-to-lens depth, lens refractive material, clear cornea incision wounds and anterior…
- Trial name
- NCT02724553
- Testing
- Acrylic lens implantation
- Sponsor
- Loma Linda University
Pseudoaphakia
Characterization and Causative Factors of Negative Dysphotopsia
The present study is designed as an exploratory study, seeking to investigate the correlation of patient complaints to subjective or objective measurement methods.
- Trial name
- NDys (NCT04224129)
- Where
- Austria
- Volunteers
- 10 people
- Sponsor
- Vienna Institute for Research in Ocular Surgery
Dysphotopsia
Perceptually Calibrated Scale of Optical Aberrations
The main objective of the project is to develop a new, more reliable method of modeling and parametrization of the halo and glare phenomena based on the subjective perception of these visual disturbances.
- Trial name
- SOOA (NCT05516160)
- Testing
- diagnostic of optical aberrations
- Volunteers
- 20 people
- Sponsor
- Military Institute od Medicine National Research Institute
Pupillary Block After DMEK, Laser Iridotomy / Surgical Iridectomy
Impact of Iridotomy/Iridectomy Size on Postoperative Pupillary Block and Dysphotopsia Following DMEK
Descemet membrane endothelial keratoplasty (DMEK) is the standard surgical treatment for corneal endothelial disorders. A postoperative pupillary block may occur despite routine preoperative laser iridotomy or intraoperative…
- Conditions
- Pupillary Block After DMEK, Laser Iridotomy / Surgical Iridectomy, Dysphotopsia, Descemet Membrane Endothelial Keratoplasty (DMEK)
- Trial name
- NCT07577635
- Testing
- Anterior Segment Optical Coherence Tomography (AS-OCT), Dysphotopsia Questionnaire
- Volunteers
- 100 people
- Sponsor
- University of Leipzig
Presbyopia Correction, Presbyopia
Clinical Evaluation of Visual Performance, Spectacle Independence, and Patient Satisfaction With TECNIS PureSee Mini-Monovision and TECNIS PureSee-TECNIS Odyssey Mix-Match
The purpose of the study is to evaluate the binocular clinical endpoints of distance, intermediate, and near vision and patient reported outcomes utilizing mini-monovision versus mix-match approaches for the correction of…
- Conditions
- Presbyopia Correction, Presbyopia, Dysphotopsia, Visual Acuity
- Trial name
- NCT07860567
- Testing
- TECNIS PureSee IOL (Model DEN00V/DET150), TECNIS Odyssey IOL (Model DRN00V/DRT150)
- Where
- United States
- Volunteers
- 68 people
- Sponsor
- Dr. Daniel H. Chang, MD
Narrow Angle Patients at Risk for Angle Closure Glaucoma
Dysphotopsia Following Laser Peripheral Iridotomy
To establish the correlation of the location of the Nd:YAG laser peripheral iridotomy to the post operative visual symptoms experienced by some patients.
- Trial name
- NCT01758237
- Testing
- Neodymium-doped: Yttrium Aluminum Garnet (Nd:YAG) laser, Nd:YAG Laser Peripheral Iridotomy
- Where
- Canada
- Volunteers
- 214 people
- Sponsor
- Credit Valley EyeCare
Cataract, Presbyopia Correction
Night Driving After Trifocal Versus Monofocal IOL Implantation
This prospective observational cohort study will compare night-driving visual difficulty and visual disturbances after bilateral implantation of an Alcon trifocal intraocular lens or an Alcon monofocal intraocular lens in adults…
- Trial name
- TriIOL (NCT07755189)
- Testing
- AcrySof IQ PanOptix TFNT00 Trifocal Intraocular Lens, Alcon Monofocal Intraocular Lens
- Where
- China
- Volunteers
- 200 people
- Sponsor
- Jin Yang
Cataract, Presbyopia
Clinical Evaluation and Comparison of the Tecnis Symfony Optiblue and Tecnis Symfony IOLs
The goal of this clinical study is to compare the Tecnis Symfony Optiblue intraocular lens implant to the Tecnis Symfony intraocular lens implant in patients over 22 years old with cataracts in both eyes.
- Trial name
- NCT06567834
- Testing
- Tecnis Symfony Optiblue/Tecnis Symfony Optiblue Toric (Models ZXR00V/ZXW150), Tecnis Symfony/Tecnis Symfony Toric (Models ZXR00/ZXT150)
- Where
- United States
- Volunteers
- 60 people
- Sponsor
- Empire Eye and Laser Center
Dysphotopsia, Posterior Capsule Opacification
Clinical Evaluation of Low Contrast Visual Performance and Low Light Phenomena in Patients With Various Intraocular Lens Implants
The goal of this clinical investigation is to evaluate visual acuity and contrast sensitivity in low lighting conditions using several different testing devices, and measure nighttime side effects of intraocular lens (IOL)…
- Conditions
- Dysphotopsia, Posterior Capsule Opacification, Visual Acuity, Visual Function
- Trial name
- NCT07213167
- Where
- United States
- Volunteers
- 120 people
- Sponsor
- Dr. Daniel H. Chang, MD