Clinical trials: Myopic Astigmatism
Hyperopia, Myopia
A Comparison of Fellow Eyes Undergoing LASIK or PRK With a Wavefront-guided Excimer Laser Versus a Wavefront-optimized Excimer Laser
Subjects with myopia, hyperopia and astigmatism are being randomized to be treated in one eye with a wavefront-guided excimer laser and their fellow eye treated with a wavefront-optimized excimer laser.
- Conditions
- Hyperopia, Myopia, Astigmatism
- Trial name
- NCT01135719
- Testing
- LASIK and PRK
- Where
- United States
- Volunteers
- 137 people, healthy volunteers welcome
- Sponsor
- Edward E. Manche
Myopia, Astigmatism
Safety and Efficacy Evaluation of a New Contact Lens Disinfecting Solution in Gas Permeable Contact Lens Wearers
The purpose of this study is demonstrate substantial equivalence of an investigational contact lens disinfecting solution to a commercially available contact lens solution in gas permeable lens wearers.
- Conditions
- Myopia, Astigmatism, Hyperopia, Refractive Error
- Trial name
- NCT01912781
- Testing
- FID 120947A contact lens disinfecting solution, Boston Simplus multi-action solution, Gas permeable contact lenses
- Volunteers
- 112 people
- Sponsor
- Alcon Research
Myopia, Astigmatism
Clinical Study to Evaluate Effectiveness of Digital Refraction
Prospective, comparative, randomized, non-masked clinical study to compare the a digital refraction with LogMAR VA testing utilizing trial lenses, to standard manual refraction using a Phoropter, and LogMAR VA testing, in…
- Trial name
- NCT03502863
- Testing
- Digital refraction, Manual Refraction
- Where
- 3 sites in United States
- Volunteers
- 102 people, healthy volunteers welcome
- Sponsor
- Visibly
Myopia
Study of the MEL 80 Excimer Laser Using LASIK in the Treatment of Moderate to High Myopia
The purpose of this study is to determine whether the MEL 80 Excimer Laser is effective in the treatment of moderate to high myopia (nearsightedness), when used as part of the Laser In Situ Keratomileusis (LASIK) procedure.
- Trial name
- NCT00762541
- Testing
- MEL 80 Treatment of High Myopia
- Where
- 5 sites in United States
- Volunteers
- 129 people, healthy volunteers welcome
- Sponsor
- Carl Zeiss Meditec, Inc.
Nearsightedness, Farsightedness
Advanced Surface Ablation (ASA) vs Laser-Assisted In Situ Keratomileusis (LASIK)
The purpose of this combined retrospective and prospective chart review analysis is to investigate the safety, efficacy, and predictability obtained via Laser-Assisted In Situ Keratomileusis (LASIK) and Advanced Surface Ablation…
- Conditions
- Nearsightedness, Farsightedness, Astigmatism
- Trial name
- NCT00778570
- Where
- Canada
- Volunteers
- 4,000 people
- Sponsor
- Ottawa Hospital Research Institute
Myopia, Hypermetropia
Anesthetic Impregnated Bandage Soft Contact Lens (BSCL) in Pain Management After Photorefractive Keratectomy (PRK)
Compared to laser-assisted in situ keratomileusis (LASIK), Photorefractive Keratectomy (PRK) is associated with more discomfort and requires more downtime.
- Conditions
- Myopia, Hypermetropia, Refractive Errors, Astigmatism
- Trial name
- NCT04283331
- Testing
- Proparacaine Ophthalmic
- Where
- United States
- Volunteers
- 30 people, healthy volunteers welcome
- Sponsor
- Beeran Meghpara, MD
Myopia, Astigmatism
KLEx Versus FS-LASIK for the Treatment of Myopia and Compound Myopic Astigmatism
FemtoLASIK is a type of laser eye surgery used to correct vision problems such as nearsightedness, farsightedness, and astigmatism. It involves two main steps: creating a flap and reshaping the cornea.
- Conditions
- Myopia, Astigmatism, Myopic Astigmatism
- Trial name
- NCT06477081
- Testing
- FS-LASIK procedure, KLEx
- Where
- Mexico
- Volunteers
- 80 people, healthy volunteers welcome
- Sponsor
- Instituto de Oftalmología Fundación Conde de Valenciana
Presbyopia, Myopia
APIOC for Presbyopia and APIOC for Presbyopia With Astigmatism
Vision and comfort, both objective and subjective, will be assessed for single vision contact lens wearers for either the APIOC™ for Presbyopia or the APIOC™ for Presbyopia Astigmatism contact lenses.
- Conditions
- Presbyopia, Myopia, Hyperopia, Astigmatism
- Trial name
- NCT04883099
- Testing
- APIOC for Presbyopia and APIOC for Presbyopia for Astigmatism
- Where
- 6 sites in United States
- Volunteers
- 50 people, healthy volunteers welcome
- Sponsor
- Lentechs, LLC
Myopia, Astigmatism
A Three-Phase Contralateral Comparison of Ray-Tracing Guided LASIK Versus Three Other Refractive Surgery Platforms to Correct Myopia or Myopia With Astigmatism
This purpose of this study is to compare a new form of LASIK called Ray Tracing Guided LASIK to 3 other forms of corneal refractive surgery: 1. KLEx (KeratoLenticule Extraction) using the Zeiss Visumax 800 Laser, 2.
- Trial name
- NCT07201298
- Testing
- Ray-Tracing Guided LASIK, Keratorefractive Lenticule Extraction (KLEx), WaveFront Optimized LASIK
- Where
- United States
- Volunteers
- 120 people, healthy volunteers welcome
- Sponsor
- Hoopes Vision
Myopia, Astigmatism
Technolas 217z Laser With Zyoptix Aspheric Algorithm Used for the LASIK Treatment of Myopia and Myopic Astigmatism.
The purpose of this study is to evaluate the safety and effectiveness of the Bausch \& Lomb Technolas 217z laser with the investigational Zyoptix Aspheric Algorithm when used for LASIK treatment of myopia and myopic astigmatism.
- Trial name
- NCT00769808
- Testing
- Bausch & Lomb 217z Excimer Laser
- Where
- Canada
- Volunteers
- 72 people
- Sponsor
- Bausch & Lomb Incorporated
Myopia, Astigmatism
Subjective Comfort With Multipurpose Care Solutions in Soft Contact Lens Wearers
The purpose of this study was to assess the comfort of OPTI-FREE RepleniSH in soft contact lens wearers.
- Conditions
- Myopia, Astigmatism, Refractive Error
- Trial name
- NCT01211535
- Testing
- OPTI-FREE RepleniSH multipurpose solution, ReNu Biotrue multipurpose solution, Silicone hydrogel contact lenses
- Where
- United States
- Volunteers
- 104 people
- Sponsor
- Alcon Research
Myopia, Hyperopia
Clinical Investigation of the Vision-R800 Device.
Randomized, bilateral, cross-over dispensing study of a standard and VR800 refraction and associated spectacle lenses.
- Conditions
- Myopia, Hyperopia, Astigmatism, Presbyopia
- Trial name
- NCT04208750
- Testing
- Vision R-800 Phoropter, Standard Phoropter
- Where
- United States
- Volunteers
- 119 people, healthy volunteers welcome
- Sponsor
- Pete Kollbaum, OD, PhD
Myopia, Astigmatism
Clinical Investigation of the Cheetah System For The Correction of Myopia With and Without Astigmatism
This study will be a 3-phase, 12-months, prospective,single arm, multicenter, open-label, non-comparative, clinical investigation conducted at up to 7 sites.
- Trial name
- NCT04200898
- Testing
- Cheetah System
- Where
- 6 sites in Croatia, India and 2 more
- Volunteers
- 286 people
- Sponsor
- Johnson & Johnson Surgical Vision, Inc.
Myopia
Development of a New Device and Method to Assess the Degree of Myopia and/or Astigmatism in Myopic People
The purpose of this clinical investigation is to check whether the new device can correctly measure a person's degree of myopia and astigmatism.
- Trial name
- MDSW_DiVA2Rx (NCT07297810)
- Testing
- Optical correction values obtained with investigational device and visual acuity, Optical correction values obtained with an autorefractometer and visual acuity, Optical correction values obtained with a phoropter and visual acuity
- Where
- France
- Volunteers
- 30 people, healthy volunteers welcome
- Sponsor
- Essilor International
Patients With Myopic Spherical Equivalent up to -12 Diopters
Q Value Customized Versus Wavefront Optimized Ablation in Femtosecond Laser-Assisted LASIK
Corneal asphericity is expressed numerically as the "Q-value". A minus value means that corneal curvature flattens towards the periphery and the cornea is prolate in shape, but when the curvature steepens towards the periphery…
- Trial name
- NCT04738903
- Testing
- Femtosecond laser assisted LASIK eye surgery
- Where
- Egypt
- Volunteers
- 40 people, healthy volunteers welcome
- Sponsor
- Assiut University
Myopia, Myopic Astigmatism
Laser In-situ Keratomileusis With Crosslinking Compared to Conventional LASIK in Patients With High Myopia
The objectives of this study are to evaluate the safety and efficacy of a treatment regimen for high myopia and myopic astigmatism: LASIK followed by crosslinking performed with the KXL Crosslinking-System and VibeX Xtra…
- Conditions
- Myopia, Myopic Astigmatism, Crosslinking, Corneal Ectasia
- Trial name
- NCT03913338
- Testing
- LasikXtra, LASIK
- Where
- Germany
- Volunteers
- 26 people, healthy volunteers welcome
- Sponsor
- University Clinic Frankfurt
Myopia, Myopic Astigmatism
SUPRACOR for Myopia and Myopic Astigmatism
This clinical study has been planned to evaluate the safety and effectiveness of the SUPRACR presbyopic excimer laser treatment algorithm for myopic eyes developed for applying to the cornea of the human eye in a single center.
- Conditions
- Myopia, Myopic Astigmatism, Presbyopia
- Trial name
- SUPRACOR (NCT01404884)
- Testing
- SUPRACOR
- Where
- Spain
- Volunteers
- 60 people
- Sponsor
- Technolas Perfect Vision GmbH
Myopic Astigmatism
A Study to Investigate the Safety and Effectiveness of the Technolas® TENEO 317 Model 2 Excimer Laser for Laser In Situ Keratomileusis (LASIK) Surgery to Treat Myopia or Myopic Astigmatism
This will be a multicenter, prospective, open label, non-randomized, single arm study evaluating the safety and effectiveness of the Technolas® TENEO 317 Model 2 (version 1.28 US software) Excimer Laser when used in LASIK surgery…
- Trial name
- NCT07377474
- Testing
- TENEO 317 Model 2 (1.28 US) Excimer Laser
- Volunteers
- 32 people
- Sponsor
- Bausch & Lomb Incorporated
Visual Acuity, Refractive Errors
Assessing the Turkish DDIVAT for Visual Acuity Measurement
The goal of this observational methodological study is to validate the Turkish version of the DDIVAT visual acuity measuring device in a Turkish-speaking adult population.
- Conditions
- Visual Acuity, Refractive Errors, Myopia, Hyperopia
- Trial name
- NCT07240480
- Testing
- DDIVAT Visual Acuity Test (Turkish Version)
- Volunteers
- 200 people, healthy volunteers welcome
- Sponsor
- Trakya University
Presbyopia
Bifocal Contact Lens Study for Adults With Age-Related Near Vision Loss
The primary objective of this study is to evaluate the distance, intermediate and near visual performance of Clerio designed single vision and Clerio designed LIRIC modified bifocal lenses (+2.00D add) compared to commercially…
- Trial name
- NCT03653715
- Testing
- Clerio Vision LIRIC-modified Bifocal Contact Lens, Johnson & Johnson 1-Day Acuvue Moist Multifocal Contact Lens, Johnson & Johnson 1-Day Acuvue Moist Contact Lens
- Where
- United States
- Volunteers
- 30 people, healthy volunteers welcome
- Sponsor
- Clerio Vision, Inc.