Clinical trials: Astigmatism Bilateral
Cataract, Presbyopia
Comparison of Aspheric Toric Intraocular Lenses for Micro-monovision
In an aging population, cataract and presbyopia become increasingly common. A cataract is the opacification of the natural crystalline lens inside a person's eye, causing reduction of vision.
- Conditions
- Cataract, Presbyopia, Astigmatism
- Trial name
- NCT05506553
- Testing
- Intervention arm - Eyhance Toric II Intraocular Lens, Control Arm - Alcon IQ Toric Intraocular lens
- Where
- United Kingdom
- Volunteers
- 140 people
- Sponsor
- Guy's and St Thomas' NHS Foundation Trust
Astigmatism
Bilateral Dispensing Study of MyDay Toric, 1-day Acuvue Moist for Astigmatism, and Dailies Aquacomfort Plus Toric Lenses
Bilateral dispensing study of MyDay Toric, 1-day Acuvue Moist for Astigmatism, and Dailies Aquacomfort Plus Toric lenses
- Trial name
- NCT03134248
- Testing
- Dailies Aquacomfort Plus Toric, 1-Day Acuvue Moist for Astigmatism, MyDay Toric
- Where
- Canada
- Volunteers
- 60 people
- Sponsor
- CooperVision, Inc.
Astigmatism Bilateral
A Bilateral Dispensing Comparison of Comfilcon A Over Senofilcon C Contact Lenses
The aim of this study is to evaluate the subjective acceptance of Comfilcon A contact lenses when worn on a daily wear modality over one month.
- Trial name
- NCT03684928
- Testing
- Comfilcon A (test), Senofilcon C (control)
- Where
- Canada
- Volunteers
- 45 people, healthy volunteers welcome
- Sponsor
- CooperVision, Inc.
Cataract
A Intra-patient Comparison of Closed Loop and Plate Haptic Toric Intraocular Lenses
During cataract surgery an artificial lens is implanted in the eye. These artificial lenses are called intraocular lenses (IOLs) and there are many different types of IOL designs.
- Trial name
- NCT02264457
- Testing
- T-flex Aspheric Toric IOL, AT TORBI toric IOL
- Where
- United Kingdom
- Volunteers
- 30 people
- Sponsor
- University of Plymouth
Cataract Bilateral, Astigmatism Bilateral
Vision and Balance Changes After Bilateral Implantation of Toric IOLs
Cataracts are the major cause of blindness in the world. Cataract surgery, being the most performed surgery in the world today, provide correction by extracting the natural lens from its capsular bag and replaced by an artificial…
- Trial name
- NCT05629078
- Testing
- Toric intraocular lens Zeiss AT TORBI
- Where
- United Kingdom
- Volunteers
- 140 people
- Sponsor
- University of Plymouth
Amblyopia Bilateral, Hyperopia of Both Eyes
Hyperopia Detection GCK With Glow Fixation
"GoCheck Kids" has added to its iPhone 7+ smart phone with flash concentrator a non-accommodating glow box fixation target. In pediatric eye patients, the "GCK" with glow box is compared to cycloplegic refraction as well as…
- Conditions
- Amblyopia Bilateral, Hyperopia of Both Eyes, Astigmatism Bilateral, Accommodation Disorder
- Trial name
- NCT04297969
- Testing
- objective pediatric vision screen "GCK glow fixation"
- Where
- United States
- Volunteers
- 133 people
- Sponsor
- Alaska Blind Child Discovery
Astigmatism
Bilateral Dispensing Clinical Trial of Stenfilcon A Against Etafilcon A for Astigmatism
Bilateral dispensing clinical trial of stenfilcon A against etafilcon A for astigmatism.
- Trial name
- NCT02410824
- Testing
- stenfilcon A toric lens, etafilcon A toric lens
- Where
- 2 sites in United States, Canada
- Volunteers
- 52 people
- Sponsor
- CooperVision, Inc.
Myopia, Hyperopia
Bilateral Dispensing Study of Fanfilcon A Toric Versus Enfilcon A Toric Lenses
Bilateral dispensing clinical trial of fanfilcon A toric lens verses enfilcon A toric lens over two weeks.
- Conditions
- Myopia, Hyperopia, Astigmatism
- Trial name
- NCT02423109
- Testing
- fanfilcon A, enfilcon A
- Where
- 2 sites in United States, Canada
- Volunteers
- 44 people
- Sponsor
- CooperVision, Inc.
Myopia, Astigmatism
Post-approval Study of New Enrolment Patients Undergoing Bilateral Treatment With the VisuMax SMILE Procedure
The objective of the post-approval study (PAS) is to assess patient experience of visual symptoms 6 months after bilateral treatment with the VisuMax SMILE procedure as measured by a patient questionnaire.
- Trial name
- NCT05740293
- Testing
- VisuMax SMILE procedure for the reduction or elimination of myopia with astigmatism
- Where
- 7 sites in United States
- Volunteers
- 186 people, healthy volunteers welcome
- Sponsor
- Carl Zeiss Meditec, Inc.
Astigmatism Bilateral, Eyeglasses
Spectacle Prescribing in Early Childhood
The purpose of this study is to compare developmental outcome for young children (12 to 35 months of age) with astigmatism meeting American Academy of Ophthalmology spectacle prescribing guidelines and who are prescribed and…
- Trial name
- SPEC (NCT04728451)
- Testing
- Spectacle wear support, Spectacles
- Where
- United States
- Volunteers
- 88 people, healthy volunteers welcome
- Sponsor
- University of Arizona
Bilateral Cataract, Astigmatism
Non-comparative Trial Following Participants Implanted Bilaterally With Mini WELL Toric Ready Intraocular Lens for 6 Months After the Second Eye Implant (FUSION)
This is a multicenter, non-comparative trial following participants implanted bilaterally with the Mini WELL Toric Ready intraocular lens (IOL) for 6 months after the second eye implant.
- Trial name
- FUSION (NCT03861351)
- Testing
- Mini WELL Toric Ready intraocular lens
- Where
- 4 sites in France, Germany and 1 more
- Volunteers
- 58 people
- Sponsor
- SIFI SpA
Astigmatism Bilateral
Comparison of Two Daily Disposable Soft Contact Lenses
The aim of this study was to investigate the short-term clinical performance and subjective acceptance of the two study lenses.
- Trial name
- NCT03779503
- Testing
- midafilcon A, somofilcon A
- Where
- United States
- Volunteers
- 55 people, healthy volunteers welcome
- Sponsor
- CooperVision, Inc.
Astigmatism Bilateral
Evaluation of Wear Experience With a Weekly Replacement Soft Contact Lens in Neophyte Lens Wearers With Astigmatism
This open-label study is of adults with astigmatism who have never worn contact lenses. Subjects will be fit into a one week planned-replacement contact lenses and will wear lenses for approximately 3 weeks.
- Trial name
- NCT06751225
- Testing
- One week replacement soft contact lenses
- Where
- United States
- Volunteers
- 40 people, healthy volunteers welcome
- Sponsor
- Ohio State University
Myopia
Evaluation of Corneal Irregular Astigmatism and Visual Quality Following Bilateral Sequential Small Incision Lenticule Extraction (SMILE) and Laser Subepithelial Keratomileusis (LASEK): A Six-Year Comparative Study
To compare the corneal spherical component (SC), regular astigmatism (RA), irregular astigmatism (IA, including Asymmetry and Irregularity) and visual quality six years after small incision lenticule extraction (SMILE) and laser…
- Trial name
- SMILE LASEK (NCT06673992)
- Testing
- This study does not involve any interventions
- Where
- China
- Volunteers
- 71 people
- Sponsor
- Shanghai 10th People's Hospital
Anisometropia, Hyperopia
Photorefractive Keratectomy for Severe Anisometropia and Isoametropia Associated With Amblyopia
Photorefractive keratectomy (PRK) with excimer laser has been used successfully to treat myopia, hyperopia, and astigmatism in adults for over 35 years.
- Conditions
- Anisometropia, Hyperopia, High Myopia, Amblyopia Isometropic
- Trial name
- NCT03610997
- Testing
- Photorefractive keratectomy
- Where
- United States
- Volunteers
- 200 people
- Sponsor
- Baylor College of Medicine
Astigmatism
A Bilateral Dispensing Clinical Trial of an Sapphire Lens Against Senofilcon A Toric for Astigmatism Lens
This study was conducted to evaluate the clinical performance of an investigational silicone-hydrogel lens against Senofilcon A toric lens. The study results were not used for design validation of the investigational product.
- Trial name
- NCT02555098
- Testing
- Sapphire contact lenses, senofilcon A contact lenses
- Where
- United States
- Volunteers
- 23 people
- Sponsor
- CooperVision, Inc.
Astigmatism
Comparison of Comfilcon A Toric Contact Lenses and Samfilcon A Toric Contact Lenses
The objective of this study is to evaluate the subjective acceptance of comfilcon A toric contact lens, compared to samfilcon A toric lens.
- Trial name
- NCT03519932
- Testing
- comfilcon A toric lens, samfilcon A toric lens
- Where
- Canada
- Volunteers
- 49 people
- Sponsor
- CooperVision, Inc.
Cataract Bilateral, Astigmatism Bilateral
Symfony Toric Intraocular Lens Visual Outcomes
In July 2016, the FDA approved an extended depth of focus (EDOF) IOL (Tecnis Symfony, Abbott Medical Optics) helping to improve the sharpness of vision at near, intermediate and far distances reducing the need of glasses after…
- Trial name
- NCT03082599
- Testing
- Presbyopia and astigmatism correcting intraocular lens
- Where
- 4 sites in United States
- Volunteers
- 120 people
- Sponsor
- Carolina Eyecare Physicians, LLC
Astigmatism Bilateral
Evaluation of Wear Experience With Daily Disposable and Monthly Replacement Toric Contact Lenses
Comparison of wear experience with daily disposable and monthly replacement soft contact lenses in contact lens wearers who have astigmatism.
- Trial name
- NCT05580575
- Testing
- Daily disposable toric soft contact lens, Monthly replacement toric daily wear soft contact lens
- Where
- 3 sites in United States
- Volunteers
- 67 people, healthy volunteers welcome
- Sponsor
- Ohio State University
Bilateral Cataract
ACRYSOF® Toric NATURAL T9 Intraocular Lens (IOL)
The purpose of this study is to describe rates of spatial distortions related to intraocular lens (IOL) misalignment for ACRYSOF® Single-Piece Toric NATURAL IOL Model SN60T9 when implanted bilaterally into the capsular bag…
- Trial name
- NCT00967473
- Testing
- ACRYSOF® Single-Piece NATURAL Toric IOL Model SN60T9 and Model SN60T8.
- Where
- United States
- Volunteers
- 15 people
- Sponsor
- Alcon Research