Clinical trials: Ocular Biometry
Cataract, Presbyopia
Comparison of Two Different Optical Biometric Systems
Primary objective of this study is to evaluate and compare the measurements of two different optical biometrics systems in patients who will undergo cataract surgery or presbyopia surgery using intraocular lenses (IOL-PC).
- Conditions
- Cataract, Presbyopia, Ocular Biometry, Intraocular Lens
- Trial name
- NCT05411341
- Testing
- Argos (Alcon Laboratories, Inc.), IOLMaster 500 (Carl Zeiss Meditec AG)
- Where
- Greece
- Volunteers
- 133 people, healthy volunteers welcome
- Sponsor
- Democritus University of Thrace
Cataract
Comparison of Three Swept-source Optical Coherence Biometry Devices in Long and Short Eyes
The aim of the study is to compare the agreement and repeatability of ocular biometric parameters obtained using three swept-source optical coherence tomography (ss-OCT) device (Argos, IOLMaster 700 and ANTERION).
- Trial name
- NCT05232214
- Testing
- Biometry
- Where
- Austria
- Volunteers
- 42 people
- Sponsor
- Vienna Institute for Research in Ocular Surgery
Cataract
Ocular Biometrics in a French Population
The investigators aimed to study ocular biometrics parameters and their association with age, gender and the prevalence of high myopia in a population of cataract surgery candidates in the South of France.
- Trial name
- NCT04992403
- Where
- France
- Volunteers
- 11,650 people
- Sponsor
- University Hospital, Montpellier
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
Dry Eye Disease (DED), Cataract (Post-operative Cataract Surgery Follow-up)
Effect of Dry Eye Disease on Accuracy of Intraocular Lens Power Calculation Before Phacoemulsification
This study aims to determine the effect of dry eye disease on intraocular lens power calculation and the postoperative refractive outcome.
- Trial name
- NCT07525336
- Testing
- dry eye disease optimization
- Volunteers
- 100 people
- Sponsor
- Assiut University
Intraocular Lens Calculation, Combined Phaco-vitrectomy
Intraocular Lens Power Calculation for Combined Phaco-vitrectomy Procedures
The aim of the study is to evaluate the degree of refractive error postoperatively in combined procedures and to calculate a new constant in order to improve current state of the art biometry calculations.
- Trial name
- NCT03856346
- Testing
- Biometry
- Where
- Switzerland
- Volunteers
- 200 people, healthy volunteers welcome
- Sponsor
- Cantonal Hospital of St. Gallen
Dry Eye
A Study to Evaluate the Effect of Miebo™ on Preoperative Biometry/Keratometry and Postoperative Refractive Accuracy
A Phase 4, Multicenter, Open-Label Study to Evaluate the Effect of Miebo™ on Preoperative Biometry/ Keratometry and Postoperative Refractive Accuracy
- Trial name
- NCT06346340
- Testing
- Miebo
- Where
- 12 sites in United States
- Volunteers
- 97 people
- Sponsor
- Bausch & Lomb Incorporated
Astigmatism
Rotational Stability of Two Soft Toric Contact Lens Designs
This study compared the rotational behavior of two commercially available soft toric contact lenses with different stabilization designs and explored whether ocular biometric and refractive characteristics were associated with…
- Trial name
- NCT07795671
- Testing
- Acuvue Oasys for Astigmatism, Air Optix for Astigmatism
- Where
- Turkey (Türkiye)
- Volunteers
- 40 people
- Sponsor
- Bozok University
Cataract
Refractive Outcomes and Ocular Biometry of Two Swept-Source Optical Coherence Tomography-Based Biometers With Segmental or Equivalent Refractive Indices (ORION)
This prospective, single-centre, randomized, parallel-group comparative clinical study evaluated the refractive prediction accuracy of two swept-source optical coherence tomography (SS-OCT) biometers in a Thai cataract surgery…
- Trial name
- ORION (NCT06377007)
- Testing
- IOLMaster 700 (Carl Zeiss Meditec AG), ARGOS (Movu/Santec; distributed by Alcon)
- Where
- Thailand
- Volunteers
- 144 people
- Sponsor
- Walailak University
Cataract, Myopia
VCSEL Based Optical Swept Source Biometry
Optical interferometric biometry is a non-invasive and highly precise method for measuring eye length and intraocular distances. The method already exists as commercial devices (e.g. IOLMaster, Carl Zeiss Meditec AG).
- Trial name
- VBOB (NCT06551480)
- Testing
- Biometry
- Where
- Austria
- Volunteers
- 60 people, healthy volunteers welcome
- Sponsor
- Rainer Leitgeb
Meibomian Gland Dysfunction
Stability of Biometry in Meibomian Gland Dysfunction
Accurate biometry is an essential and indispensable tool in preoperative cataract surgery setting to yield optimal postoperative refractive outcome.
- Trial name
- NCT04322656
- Testing
- Lipiflow treatment
- Where
- Austria
- Volunteers
- 31 people
- Sponsor
- Vienna Institute for Research in Ocular Surgery
Anterior Segment of Eye, Axial Length
Agreement of Two OCT Biometers: A Pilot Study
The purpose of this study is to compare the measurements obtained with two different biometers, UNITY Dx and Anterion. In eye care, a biometer is a device that uses laser technology to take highly precise measurements of the…
- Conditions
- Anterior Segment of Eye, Axial Length, Biometrics Measurement
- Trial name
- NCT07782619
- Testing
- UNITY DX, ANTERION
- Where
- United States
- Volunteers
- 50 people
- Sponsor
- Alcon Research
Cataract, Cornea
Agreement and Accuracy of Different Devices for Biometry Measurements in Patients With Cataract
The rationale of this study is to compare repeatability, reproducibility and agreement of three different AS-OCT devices and Pentacam.
- Conditions
- Cataract, Cornea, Surgery
- Trial name
- Comparison (NCT04323358)
- Testing
- Biometry, Keratometry
- Where
- Austria
- Volunteers
- 50 people
- Sponsor
- Medical University of Vienna
Cataract
Clinical Study - ES 900 - 2020-1
EYESTAR 900 is a device developed by Haag-Streit which utilises 3D OCT for quantitative measurements of the geometry of the entire eye, including ocular biometry and corneal topography.
- Trial name
- NCT05304182
- Testing
- EYESTAR 900, LENSTAR LS 900
- Where
- India
- Volunteers
- 50 people
- Sponsor
- Haag-Streit AG
Cataract, Glaucoma
To Study Ocular Outflow Dynamics of the Eye Using Intraoperative Tonographic Biometry and Assess Its Predictive Value in Improving Postoperative Outcomes.
The objective of this study is to evaluate ocular outflow dynamics of the eye using intraoperative tonographic biometry and assess its predictive value in improving postoperative outcomes.
- Trial name
- NCT07425496
- Testing
- disposable Deltran I pressure sensor
- Where
- United States
- Volunteers
- 150 people
- Sponsor
- The New York Eye & Ear Infirmary
Cataract
Intraocular Lens Power Calculation Using Pre- and Intra-operative Measurements
Recently a prototype of a combination of an anterior segment OCT (VISANTE; Carl Zeiss Meditec AG) and an operating microscope (OPMI 200; Carl Zeiss Meditec AG) was introduced that allows measurements of the crystalline lens as…
- Trial name
- NCT02513134
- Where
- Austria
- Volunteers
- 75 people
- Sponsor
- Prim. Prof. Dr. Oliver Findl, MBA
Cataract
Refractive Outcomes Utilizing Two SS-OCT Biometers for IOL Power Calculations
The purpose of this study is to evaluate and compare the potential refractive outcomes using the Argos 1.5 biometer in the surgical planning for cataract extraction to that obtained from IOLMaster 700.
- Trial name
- NCT06801678
- Where
- United States
- Volunteers
- 50 people
- Sponsor
- The Eye institute of Utah
Cataract, Lens Opacities
Feasibility Investigation of Biometry and Tomography Measurements in a Heterogeneous Patient Cohort
The planned clinical investigation will be conducted to acquire raw data for the development of the algorithm. The data acquisition is intended to obtain first impressions of the potential performance of the changed hardware and…
- Conditions
- Cataract, Lens Opacities, Artificial Lens Implant, Corneal Astigmatism
- Trial name
- BioBase (NCT05458661)
- Testing
- Clinical Prototype BioBase (SN 07 and SN 08)
- Volunteers
- 100 people, healthy volunteers welcome
- Sponsor
- Carl Zeiss Meditec AG
Hydration Status, Macular Thickness
Hydration Status and Ocular Parameters Study
This study will examine how hydration status (drinking a large amount of water or avoiding water for a short period of time) affects the eye.
- Conditions
- Hydration Status, Macular Thickness, Ocular Biometry
- Trial name
- HYDRI-EYE (NCT07177131)
- Testing
- Relative Dehydration Protocol, Hyperhydration Protocol
- Volunteers
- 60 people, healthy volunteers welcome
- Sponsor
- Ante Kreso
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