Whole Eye Optical Coherence Tomography (OCT) to Improve Refractive Surgery and Eye Care

Image, Body Clinical Trial

Official title:

Whole Eye Optical Coherence Tomography (OCT) to Improve Refractive Surgery and Eye Care

Clinical Trial Details — Status: Terminated

Administrative data

• NCT number: NCT03219567
• Other study ID #: Pro00056946
• Status: Terminated
• 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
• 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.

Related Conditions & MeSH terms

• Image, Body

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