Clinical trials: Corneal Thickness Measurement
Corneal Thickness Measurement, Epithelial Thickness Measurement
Repeatability, Reproducibility and Comparison of Cirrus OCT, RTVue OCT, MS-39 OCT, and Insight 100 VHFDU
The purpose of this study is to evaluate the repeatability and reproducibility of corneal, epithelial, and LASIK flap thickness using the Carl Zeiss Meditec Cirrus HD OCT 5000, Optovue RTVue OCT, CSO MS-39 OCT, and ArcScan…
- Conditions
- Corneal Thickness Measurement, Epithelial Thickness Measurement, LASIK Flap Thickness Measurement, SMILE Cap Thickness Measurement
- Trial name
- NCT03473847
- Testing
- ArcScan Insight 100 very high-frequency digital ultrasound, Carl Zeiss Meditec Cirrus HD OCT 5000, Optovue RTVue OCT
- Where
- United Kingdom
- Volunteers
- 242 people, healthy volunteers welcome
- Sponsor
- London Vision Clinic
Intraocular Pressure, Corneal Pachymetry
Comparative Study of Non-contact Tonometers for Intraocular Pressure and Corneal Cell Thickness Measurements
The primary objective of this clinical study is to collect clinical data to support FDA 510(k) submissions for the Topcon CT-800, CT-1, CT-1P and TRK-2P non-contact tonometers.
- Trial name
- NCT02138279
- Where
- United States
- Volunteers
- 65 people, healthy volunteers welcome
- Sponsor
- Topcon Medical Systems, Inc.
Intraocular Pressure
Effect of Central Corneal Thickness On IOP Using Various Tonometers
The primary purpose of this study is to evaluate the effects of ocular physical properties on intraocular pressure (IOP) measurements in eyes with healthy corneas using the following instruments to measure IOP: Goldmann…
- Trial name
- CCT (NCT00570791)
- Testing
- Tonometer
- Where
- 2 sites in United States
- Volunteers
- 166 people, healthy volunteers welcome
- Sponsor
- University of Nebraska
Corneal and Endothelial Cell Measurements
Comparative Study of the TOMEY Specular Microscope EM-4000 and the Konan CellChek XL
The Tomey EM-4000 Specular Microscope is designed to observe and analyze corneal endothelium.
- Trial name
- NCT02977793
- Testing
- Tomey EM-4000 Specular Microscope, Konan CellChek XL Specular Microscope
- Volunteers
- 81 people, healthy volunteers welcome
- Sponsor
- Tomey Corporation
Corneal Thickness Measurement, Epithelial Thickness Measurement
Repeatability and Reproducibility of the ArcScan Insight 100 VHF Digital Ultrasound
The purpose of this study is to evaluate the repeatability and reproducibility of corneal (including corneal, epithelial, stromal, and LASIK flap thickness) and anterior segment measurements using the ArcScan Insight 100 very…
- Conditions
- Corneal Thickness Measurement, Epithelial Thickness Measurement, Anterior Eye Segment Measurements
- Trial name
- NCT02519985
- Testing
- ArcScan Insight 100 very high-frequency digital ultrasound
- Where
- United Kingdom
- Volunteers
- 40 people, healthy volunteers welcome
- Sponsor
- London Vision Clinic
Uveitis
RNFL Thickness Measurements Obtained Using SD-OCT and SLP Using GDx Variable Corneal Compensation
The aim of this study is to evaluate the correlation of retinal nerve fiber layer (RNFL) thickness measured using spectral domain optical coherence tomography (SD-OCT) and scanning laser polarimetry (SLP) in uveitic eyes compared…
- Trial name
- Real (NCT03206268)
- Testing
- SD-OCT and SLP using GDx variable corneal compensation
- Where
- France
- Volunteers
- 54 people, healthy volunteers welcome
- Sponsor
- Hospices Civils de Lyon
Corneal Endothelial Cell Loss
Comparative Study of Specular Microscopes for Endothelial and Corneal Cell Measurements
The primary objective of this clinical study is to collect clinical data to support an FDA 510(k) submission for the Topcon Specular Microscope SP-1P.
- Trial name
- NCT02138266
- Testing
- Topcon Specular Microscope SP-1P, Konan Specular Microscope CELLCHEK XL
- Where
- United States
- Volunteers
- 65 people
- Sponsor
- Topcon Medical Systems, Inc.
Glaucoma Eye
Assessment of the Occuity PM1 Pachymeter
To determine whether the Occuity PM1 device is non-inferior in measuring central corneal thickness when compared to ultrasound pachymetry, the Lenstar and the Pentacam.
- Trial name
- NCT05895617
- Where
- United Kingdom
- Volunteers
- 100 people, healthy volunteers welcome
- Sponsor
- Occuity Limited
Corneal and Endothelial Cell Measurements
Comparative Study of Specular Microscope for Cell Density, Coefficient of Variation, Hexagonality and Corneal Thickness
The primary objective of this clinical study is to collect clinical data to support an FDA 510(k) submission for the Nidek Specular Microscope CEM-530.
- Trial name
- NCT01729975
- Where
- United States
- Volunteers
- 80 people, healthy volunteers welcome
- Sponsor
- Nidek Co. LTD.
Corneal Thickness
Comparation of Different Devices to Measure Corneal Thickness
Comparison of different methods for measuring peoples corneal thickness
- Trial name
- NCT01251705
- Where
- Germany
- Volunteers
- 70 people, healthy volunteers welcome
- Sponsor
- Technische Universität Dresden
Glaucoma, Retinal Disease
Nidek RS3000 Comparative Study
The primary objective of this clinical study is to compare the Nidek RS-3000 Optical Coherence Tomography (OCT) device to the Optovue RTVue OCT.
- Conditions
- Glaucoma, Retinal Disease, Corneal Disease
- Trial name
- NCT01384487
- Where
- United States
- Volunteers
- 89 people, healthy volunteers welcome
- Sponsor
- Nidek Co. LTD.
Normal Non-fluency, Cataract
Comparative Study of the Optical Biometer for Measurements of the Eye
The primary purpose of this comparative clinical study is to collect clinical data to demonstrate the equivalence of the investigational device to the predicate device for measurements of the eye.
- Conditions
- Normal Non-fluency, Cataract, Aphakic Eye, Eyes With Corneal Abnormality
- Trial name
- NCT01729962
- Where
- United States
- Volunteers
- 125 people, healthy volunteers welcome
- Sponsor
- Nidek Co. LTD.
Keratoconus
Agreement and Accuracy of Different Devices Corneal Measurements
To compare repeatability, reproducibility and agreement of both, AS- OCT and Scheimpflug imaging, for the measurement of corneal curvature and corneal thickness in patients with keratoconus.
- Trial name
- NCT04383366
- Testing
- Pentacam® (Oculus, Inc., Wetzlar, Germany), Casia II (Tomey Germany, Nürnberg), Spectralis Anterion (Heidelberg Engineering, Heidelberg, Germany)
- Where
- Austria
- Volunteers
- 50 people
- Sponsor
- Gerald Schmidinger
Glaucoma, Retinal Disease
OCT Agreement and Crossed Precision Study
The purpose of this study is to asses the agreement of the RS-3000 Lite and RS-3000 Advance to the RS-3000, assess the crossed precision of each study device and to assess the transference of a reference database from the RS-3000…
- Conditions
- Glaucoma, Retinal Disease, Corneal Disease
- Trial name
- NCT02050880
- Where
- United States
- Volunteers
- 119 people, healthy volunteers welcome
- Sponsor
- Nidek Co. LTD.
Corneal Thickness Measurement
Thick Cornea with High Back Elevation
To follow up cases of thick cornea with high back elevation by pentacam.
- Trial name
- NCT06905977
- Testing
- pentacam
- Volunteers
- 40 people
- Sponsor
- Assiut University
Corneal Endothelial Cell Loss
Second Comparative Study of Specular Microscopes for Endothelial and Corneal Cell Measurements
The primary objective of this clinical study is to collect additional clinical data to support an FDA 510(k) submission for the Topcon Specular Microscope SP-1P.
- Trial name
- NCT02427256
- Testing
- Topcon Specular Microscope SP-1P, Konan Specular Microscope CELLCHEK XL
- Where
- United States
- Volunteers
- 76 people
- Sponsor
- Topcon Medical Systems, Inc.