refractive error
Showing 1 - 25 of 1,593
Refractive Errors Trial in Hong Kong (3000K Reading lamp, 4500K Reading lamp, 6500K Reading lamp)
Recruiting
- Refractive Errors
- 3000K Reading lamp
- +2 more
-
Hong Kong, Kowloon, Hong KongOptometry Research Clinic
Feb 14, 2023
Ocular Development and Refractive Error Changes Among Children
Active, not recruiting
- Myopia
-
Guangzhou, Guangdong, China
- +1 more
Mar 14, 2022
Clinical Investigation of Refraction Techniques
Recruiting
- Refractive Error
- Refractive Technique (MR #1)
- Refractive Technique (MR #2)
-
Birtinya, Queensland, AustraliaSunshine Eye Clinic
Aug 8, 2022
Myopia, Amblyopia, Refractive Error - Myopia Axial Trial in Beijing (Airdoc device of red light for Myopia)
Completed
- Myopia
- +3 more
- Airdoc device of red light for Myopia
-
Beijing, Haidian District, ChinaQiu Jenny
Jul 20, 2023
Refractive Error Trial in Palo Alto, Draper (ELITA System)
Not yet recruiting
- Refractive Error
- ELITA System
-
Palo Alto, California
- +1 more
Jan 25, 2023
The Initiating Factors of Myopia Among Primary and Secondary
Recruiting
- Myopia; Refractive Error
- No intervention
-
Tianjin, Tianjin, ChinaTianjin Eye Hospital
Nov 26, 2022
Blindness,Visual Impairment, Refractive Error, Cataract, High Myopia, Aging Trial in Shanghai (spectacles)
Recruiting
- Blindness,Visual Impairment, Refractive Error, Cataract, High Myopia, Aging
- spectacles
-
Shanghai, Shanghai, ChinaShanghai Eye Disease Prevention & Treatment Center
May 17, 2022
Data on Johnson & Johnson Surgical Vision Products
Enrolling by invitation
- Refractive Error
- +2 more
- Intervention
-
Bakersfield, CaliforniaEmpire Eye and Laser Center
Jan 23, 2023
Refractive Error in Chinese Students
Recruiting
- Myopia
- outdoor time
-
Tianjin, ChinaTianjin Eye Hospital
Nov 11, 2021
Refractive Errors, Astigmatism Trial in Inglewood (Hand-held device supported by a mobile application, Phoropter, Autorefractor)
Completed
- Refractive Errors
- Astigmatism
- Hand-held device supported by a mobile application
- +2 more
-
Inglewood, CaliforniaUnited Medical Research Institute
Feb 28, 2022
Presbyopia, Refractive Error, Near Vision Trial in Glendale (Aceclidine + Brimonidine, Aceclidine, Brimonidine)
Recruiting
- Presbyopia
- +4 more
- Aceclidine + Brimonidine
- +2 more
-
Glendale, CaliforniaSite #101
Jan 10, 2023
Refractive Error - Myopia Severe, Refractive Error - Myopia Simple Trial in Ireland, Singapore, United States (WaveLight®
Completed
- Refractive Error - Myopia Severe
- Refractive Error - Myopia Simple
- WaveLight® Ultraviolet Femtosecond (FS) Laser System
- Laser Assisted Lenticular Extraction
-
Sioux Falls, South Dakota
- +3 more
Mar 30, 2022
Refractive Error - Myopia Bilateral Trial in United States (Deseyne Daily Disposable Contact Lens (Test Device))
Recruiting
- Refractive Error - Myopia Bilateral
- Deseyne Daily Disposable Contact Lens (Test Device)
-
Longwood, Florida
- +4 more
Jun 25, 2023
Refractive Error Trial in Safdarjung Enclave, Singapore (Cheetah femtosecond laser and Cheetah patient interface, IntraLase iFS
Recruiting
- Refractive Error
- Cheetah femtosecond laser and Cheetah patient interface
- +2 more
-
Rajajinagar, Bangalore, India
- +2 more
Jan 23, 2023
Refractive Error Trial in United States (iDesign Refractive Studio with STAR S4 IR® Excimer laser System)
Recruiting
- Refractive Error
- iDesign Refractive Studio with STAR S4 IR® Excimer laser System
-
Los Angeles, California
- +9 more
Jan 23, 2023
Correction of Anisometropic Amblyopia in Children.
Recruiting
- Amblyopia
- +3 more
- Axial length measurement in millimeter (mm) by optical biometry device
- Autorefractometer to measure the refractive error in both eyes.
-
Banhā, Benha, EgyptAhmed Abdelshafy Tabl
Apr 5, 2022
Hyperopia, Amblyopia, Anisohyperopia Trial in Coventry, Birmingham (Multifocal contact lenses, Single vision contact lenses)
Completed
- Hyperopia
- +2 more
- Multifocal contact lenses
- Single vision contact lenses
-
Coventry, Walsgrave, United Kingdom
- +1 more
Feb 16, 2022
Amblyopia, Healthy Trial (Vivid Vision Home, Refractive error correction)
Not yet recruiting
- Amblyopia
- Healthy
- Vivid Vision Home
- Refractive error correction
- (no location specified)
Apr 4, 2022
Errors of Refraction Among Primary School Children
Recruiting
- Error, Refractive
- Visual acuity measurement
-
Minya, Minia, EgyptFaculty of Medicine
Oct 7, 2022
Refractive Accuracy of "2WIN" and Portable Autorefractors
Completed
- Refractive Error - Myopia Axial
- +4 more
- "2WIN" Photoscreener
- +2 more
-
Anchorage, AlaskaAlaska Children's EYE & Strabismus
Jul 21, 2021
Near Horizontal Heterophoria in Chinese Children
Completed
- Myopia, Progressive
- axial length and refractive error
-
Tianjin, ChinaTianjin Eye Hospital
Aug 11, 2021
Refractive Error - Myopia Bilateral Trial in Atlanta, Westerville (Hioxifilcon A standard hydrogel contact lens with Hyaluronic
Completed
- Refractive Error - Myopia Bilateral
- Hioxifilcon A standard hydrogel contact lens with Hyaluronic Acid (HA)
-
Atlanta, Georgia
- +1 more
Aug 9, 2021
Refractive Error in Chinese University Students
Completed
- Refractive Error - Myopia Axial
- myopia or not myopia
-
Shanghai, Shanghai, ChinaShanghai Guanghua Integrated Traditional Chinese and Western Med
Dec 8, 2020
Stable Myopic Refractive Error, With or Without Astigmatism Trial in United States (STAR S4 IR laser with iDesign)
Completed
- Stable Myopic Refractive Error, With or Without Astigmatism
- STAR S4 IR laser with iDesign
-
Camp Pendleton, California
- +6 more
Dec 7, 2021
Refractive Error - Myopia Bilateral Trial in Atlanta, Westerville, Brentwood (Hioxifilcon A standard hydrogel contact lens with
Completed
- Refractive Error - Myopia Bilateral
- Hioxifilcon A standard hydrogel contact lens with Hyaluronic Acid (HA)
-
Atlanta, Georgia
- +2 more
Jul 21, 2021