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Clinical Trial Details — Status: Terminated

Administrative data

NCT number NCT03219567
Other study ID # Pro00056946
Secondary ID
Status Terminated
Phase
First received
Last updated
Start date October 9, 2014
Est. completion date November 21, 2019

Study information

Verified date November 2021
Source Duke University
Contact n/a
Is FDA regulated No
Health authority
Study type Interventional

Clinical Trial Summary

The overall objective is to develop the hardware systems and software algorithms necessary to make accurate measurements of the whole eye with optical coherence tomography (OCT). The research procedure that each subject will undergo is imaging with the OCT system. Three populations will be included: 1. Normals to ensure the imaging range of the system, 2. Patients with previous LASIK who will be undergoing cataract surgery, and 3. Patients with a history of cataract surgery or high myopia. The third group will also undergo MRI imaging for comparison. There are no known risks to the subject from imaging with optical coherence tomography beyond what is normal for standard ocular photographic procedures. Light exposure is below ANSI limits. In groups 2 and 3, clinical parameters drawn from the OCT images will be compared to standard of care imaging.


Recruitment information / eligibility

Status Terminated
Enrollment 82
Est. completion date November 21, 2019
Est. primary completion date November 21, 2019
Accepts healthy volunteers Accepts Healthy Volunteers
Gender All
Age group 18 Years and older
Eligibility Inclusion Criteria: - 21 years or older. - Pseudophakic group: has had prior uncomplicated cataract surgery with a monofocal or toric intraocular lens, able to undergo head MRI - High myopia group: refraction equal to or stronger than -6 D spherical equivalent, able to undergo head MRI Exclusion Criteria: - under 21 years of age, unable or unwilling to give consent. - Pseudophakic group: complications with cataract surgery or insertion of a multifocal intraocular lens, failure to pass MRI pre-screening (e.g. prior metallic implants, claustrophobic), unable to fixate. - High myopia group: failure to pass MRI pre-screening, unable to fixate.

Study Design


Related Conditions & MeSH terms


Intervention

Device:
Optical Coherence Tomography (OCT)
Optical coherence tomography (OCT) is a non-contact, micrometer scale imaging technique, it provides clinicians and researchers with high resolution in vivo images sufficient to visualize layered microanatomy in 3D. The study team will develop the hardware systems and software algorithms necessary to enable simultaneous OCT imaging of all the refractive surfaces of the eye.
Magnetic resonance imaging (MRI)
Magnetic resonance imaging (MRI) is a medical imaging technique that uses a magnetic field and computer-generated radio waves to create detailed images of the organs and tissues in the body.

Locations

Country Name City State
United States Duke University Duke Eye Center Durham North Carolina

Sponsors (1)

Lead Sponsor Collaborator
Duke University

Country where clinical trial is conducted

United States, 

Outcome

Type Measure Description Time frame Safety issue
Primary Difference in Radius of Curvature (Rc) of the Posterior Eye From OCT Compared to MRI The radius of curvature of the posterior eye will be measured via surface fitting of the posterior eye data from OCT and MRI. Data reported reflects the Rc of the posterior eye measured by OCT minus the value obtained by MRI measurement. 36 months
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