Clinical trials: Ocular Biometry
Retinopathy of Prematurity
Refractive Error and Biometry in Retinopathy of Prematurity
The investigators compared long-term refractive and biometric outcomes in children with retinopathy of prematurity who received two different anti-vascular endothelial growth factor agents.
- Trial name
- NCT03334513
- Testing
- Bevacizumab, Ranibizumab
- Volunteers
- 35 people
- Sponsor
- San Ni Chen
Myopia
Study Comparing Eye Growth Over Time in Children Using Two Myopia Control Lenses
The goal of this clinical trial is to investigate the short-term changes in the eye structure while wearing two types of lenslet-based myopia control lenses over a period of 6 months in children aged 6 to 13 years with myopia.
- Trial name
- NCT07253064
- Testing
- MCL 1, MCL 2
- Where
- Singapore
- Volunteers
- 20 people
- Sponsor
- Essilor International
Hyperopia, Refractive Error
Optical Defocus to Stimulate Eye Elongation in Hyperopia
Axial hyperopia results when the length of the eye is too short for the eye to properly focus distance objects on the retina while the focusing system is relaxed.
- Trial name
- ODSEEH (NCT00950924)
- Testing
- Simultaneous Vision Bifocal Soft Contact Lenses, Single Vision Soft Contact Lenses
- Where
- United States
- Volunteers
- 30 people, healthy volunteers welcome
- Sponsor
- Aller, Thomas A., OD
Subluxation of Lens
Biometry of Occult Lens Subluxation Misdiagnosed as Primary Acute Angle Closed Glaucoma
In this work, we evaluated the biometry data of lens subluxation inducing acute angle closure which were misdiagnosed as primary angle closure at the first visit, and compared with the data of chronic angle closure glaucoma…
- Trial name
- NCT03752710
- Volunteers
- 183 people
- Sponsor
- Tianjin Medical University Eye Hospital
Congenital Cataract, Microphthalmos
Biometric Characteristics of the Eye With Microcornea/Microphthalmia and Congenital Cataract Before And After Cataract Extraction
Early cataract surgery in microcornea/microphthalmia eyes is essential to prevent amblyopia and improve visual outcomes, including stereopsis.
- Conditions
- Congenital Cataract, Microphthalmos, Microcornea
- Trial name
- NCT04759560
- Where
- Egypt
- Volunteers
- 133 people
- Sponsor
- Alexandria University
Diabetic Retinopathy Patients After Vitrectomy
Comparison of the Visual Quality of Traditional Ultrasound Biometrics and Lenstar on the Cataract After Pars Plana Vitrectomy
Comparison of the visual quality of traditional ultrasound biometrics and lenstar on the cataract patients with diabetic retinopathy after vitrectomy in the 3 months later.To evaluate the clinical value of lenstar in…
- Trial name
- PPV (NCT03485586)
- Testing
- Traditional ultrasound biometrics, Lenstar
- Where
- China
- Volunteers
- 60 people
- Sponsor
- Bojie Hu
Dry Eye, Cataract
Effect of Dry Eye Treatment on Corneal Astigmatism Measurements
This prospective single-center study evaluates the effect of dry eye disease and short-term ocular surface treatment on the agreement and repeatability of corneal astigmatism measurements in patients with age-related cataract.
- Trial name
- NCT07657858
- Testing
- Sodium Hyaluronate Eye Drops
- Where
- China
- Volunteers
- 400 people
- Sponsor
- Jin Yang
Retinopathy of Prematurity, Myopia
Prematurity and Ophthalmological Changes
Ophthalmological differences in school-aged children with and without a history of retinopathy of prematurity
- Trial name
- NCT06452524
- Testing
- axial length (AU) and anterior chamber depth (ACD), optical coherence tomography (OCT)
- Where
- Turkey (Türkiye)
- Volunteers
- 211 people, healthy volunteers welcome
- Sponsor
- Ankara City Hospital Bilkent
Cataract, Refractive Errors
Comparison of Intraocular Lens Power Calculation Methods After Corneal Laser Refractive Surgery in Axial and Refractive Ammertropia
The study aims at determining the best biometry calculation formula to be used in IOL calculation of cataract patients how previously underwent laser refractive correction surgery
- Trial name
- NCT01979172
- Where
- Egypt
- Volunteers
- 400 people, healthy volunteers welcome
- Sponsor
- The National Eye Hospital, Cairo, Egypt
Myopia
Binocular Peripheral Myopic Defocus Using a Clinical Prototype Device
Kubota Vision Inc. has developed a spectacle-like prototype device which is designed to be used as a light-based therapy to reduce myopia progression.
- Trial name
- NCT05425108
- Testing
- Binocular CP1
- Where
- United States
- Volunteers
- 45 people
- Sponsor
- Kubota Vision Inc.
Child Development
Dongguan Eye Study of Schoolchildren and Adolescents（DESSA）
This is a study to report the change of ocular biometry of schoolchildren and adolescents as well as its association with birth parameters in China.
- Trial name
- NCT03409094
- Where
- China
- Volunteers
- healthy volunteers welcome
- Sponsor
- Sun Yat-sen University