Clinical trials: Presbyopia,
Pinhole
Functional and Physiological Changes Induced by Pinhole Glasses in Presbyopia
This study is aimed at presbyopic patients that do not require magnifying glass at close rage. The purpose of this study is to investigate the functional and physiological changes in eye induced by pinhole glass.
- Trial name
- NCT02722291
- Testing
- Trayner Pinhole Glasses (Trayner Glasses, Ivybridge Devon, U.K.)
- Where
- South Korea
- Volunteers
- 40 people, healthy volunteers welcome
- Sponsor
- Chung-Ang University Hospital
Cataract, Presbyopia
Multifocal Intraocular Lens x Monovision x Hybrid Monovision After Bilateral Cataract Surgery
To compare refractive outcomes and patient's visual quality after bilateral cataract surgery when implanting multifocal intraocular lens, monofocal with monovision or hybrid monovision.
- Trial name
- NCT02595177
- Testing
- Cataract surgery with intraocular lens implantation.
- Where
- Brazil
- Volunteers
- 30 people, healthy volunteers welcome
- Sponsor
- Federal University of São Paulo
Presbyopia
Mix and Match Study of Two Multifocal Intraocular Lens With Different Add Power
To assess postsurgical visual acuity (distant, intermediate, near), refractive errors, contrast sensitivity, visual function and patient satisfaction after implantation of multifocal IOLs of different add power contralaterally.
- Trial name
- NCT02556944
- Testing
- Phacoemulsification with multifocal intraocular lens
- Volunteers
- 40 people, healthy volunteers welcome
- Sponsor
- tae-young chung
Myopia,, Hyperopia,
Refraction Determination Analysis
Correlating the accuracy of a refraction done over telemedicine to that of a standard refraction, with a study hypothesis that the results will be equivalent.
- Conditions
- Myopia,, Hyperopia,, Astigmatism,, Presbyopia,
- Trial name
- NCT01995435
- Testing
- Telemedicine refraction, Traditional refraction
- Volunteers
- 30 people, healthy volunteers welcome
- Sponsor
- Lee, Steven, M.D.
Presbyopia, Refractive Error
Dispensing Study to Assess Visual Performance of Prototype Contact Lenses
The aim of this study is to assess visual performance of prototype soft contact lens designs compared to commercially available contact lenses over one-week of lens wear.
- Trial name
- NCT02214797
- Testing
- Etafilcon A, Lotrafilcon B , Senofilcon A
- Where
- Australia
- Volunteers
- 67 people, healthy volunteers welcome
- Sponsor
- Brien Holden Vision
Presbyopia
Multifocal Lens Centration and Its Effect on Visual Performance in a Presbyopic Population
The purpose of this study is to use a corneal topographer, a device that is readily available in most optometric practices, in order to determine the position of the multifocal (MF) contact lens (CL) optics in relation to the…
- Trial name
- BUICK (NCT02228109)
- Testing
- Acuvue Oasys for Presbyopia, PureVision2 for Presbyopia, Biofinity Multifocal
- Where
- Canada
- Volunteers
- 35 people, healthy volunteers welcome
- Sponsor
- University of Waterloo
Myopia, Hyperopia
Safety and Efficacy Study to Evaluate the Treatment of Both Near and Distance Vision in a Simultaneous Laser Procedure
By using a new software two consecutive laser treatments have been combined to correct the distance vision and to provide a near vision component in addition to the first treatment.
- Conditions
- Myopia, Hyperopia, Presbyopia, Refractive Error
- Trial name
- Supracor (NCT01322919)
- Testing
- Supracor
- Where
- Mexico
- Volunteers
- 61 people, healthy volunteers welcome
- Sponsor
- Technolas Perfect Vision GmbH
Hyperopic Presbyopia
Prospective Investigation of SUPRACOR Visual Outcomes of Presbyopic Hyperopic Patients With and Without Astigmatism
This phase IV study is an open, prospective, single-center, single-surgeon bilateral eye study to investigate the bilateral uncorrected intermediate visual acuity of presbyopic hyperopic patients, who have been treated with…
- Trial name
- NCT01628146
- Testing
- SUPRACOR LASIK treatment
- Where
- Ireland
- Volunteers
- 40 people, healthy volunteers welcome
- Sponsor
- Technolas Perfect Vision GmbH
Presbyopia, Refractive Error
Visual Performance of Prototype Contact Lens Designs
The aim of this study is to assess the visual performance of prototype soft contact lens designs compared to a commercially available contact lens
- Trial name
- NCT02193555
- Testing
- Etafilcon A, Senofilcon A
- Where
- Australia
- Volunteers
- 91 people, healthy volunteers welcome
- Sponsor
- Brien Holden Vision
Myopia, Hyperopia
Development of a Validated Chart for Intermediate Vision Assessment
Development of a validated computer-based instrument (software program) for the assessment of intermediate visual acuity.
- Conditions
- Myopia, Hyperopia, Presbyopia, Astigmatism
- Trial name
- NCT02279446
- Testing
- Intermediate Visual acuity (IVA) assessment
- Where
- Greece
- Volunteers
- 400 people, healthy volunteers welcome
- Sponsor
- Democritus University of Thrace
Refractive Error, Presbyopia
Peripheral PresbyLASIK Using the Allegretto Wavelight System For The Treatment of Presbyopia
The aim of this study is to analyze the results of PresbyLASIK performed using the wavefront-optimized LASIK for the treatment of presbyopia on low hyperopic and low myopic patients with astigmatism.
- Trial name
- NCT01059006
- Testing
- PresbyLASIK
- Volunteers
- healthy volunteers welcome
- Sponsor
- University of California, San Diego
Refractive Error, Presbyopia
Randomized Clinical Trial of Bifocal Lenses Versus Computer-specific Progressive Addition Lenses
This is a research study designed to test the utility of D-shaped bifocal lenses and PRIO Computer Lenses for persons using a computer.
- Conditions
- Refractive Error, Presbyopia, Asthenopia, Eyeglasses
- Trial name
- NCT00585026
- Testing
- D-28 bifocal lenses and frame, Progressive addition computer lenses and frame
- Where
- United States
- Volunteers
- 40 people, healthy volunteers welcome
- Sponsor
- University of Alabama at Birmingham