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Clinical Trial Details — Status: Recruiting

Administrative data

NCT number NCT03713268
Other study ID # Pro00100437
Secondary ID U01EY028079
Status Recruiting
Phase
First received
Last updated
Start date September 30, 2018
Est. completion date May 31, 2025

Study information

Verified date May 2024
Source Duke University
Contact Neeru Sarin, MBBS
Phone 919-668-5341
Email neeru.sarin@duke.edu
Is FDA regulated No
Health authority
Study type Observational

Clinical Trial Summary

The overall five-year goals of the project are to develop novel technology to provide actionable new information through provision of live volumetric imaging during surgery, improving surgical practice and outcomes. The investigators believe this technology will enable novel ophthalmic and other microsurgeries not possible due to current limitations in surgical visualization.


Recruitment information / eligibility

Status Recruiting
Enrollment 262
Est. completion date May 31, 2025
Est. primary completion date May 31, 2024
Accepts healthy volunteers Accepts Healthy Volunteers
Gender All
Age group 4 Weeks and older
Eligibility Inclusion Criteria: 1. Healthy controls: Healthy eyes without known disease: refractive error including myopia and non-significant cataract is allowed. For selected testing pseudophakia is allowed. 2. Surgeons as research subjects: Adult (=18 years old) 3. Surgical patients (vitreoretinal surgery): Patients undergoing examination under anesthesia or surgery for vitreoretinal diseases 4. Surgical patients (anterior segment surgery-glaucoma, ocular surface or strabismus requiring extraocular muscle surgery): Include both adults and children. Patient undergoing primary, elective minimally invasive glaucoma surgery, ocular surface surgery, or strabismus surgery. Exclusion Criteria: 1. Healthy controls: Any ocular disease that restricts the ability to perform OCT scanning. Conflict of interest with investigators/study personnel, e.g. a student in the lab of an investigator. 2. Surgeons as research subjects: no specific exclusion criteria. 3. Surgical patients (vitreoretinal surgery): Neonates (< 4 weeks of age) and patients with any ocular disease that restricts the ability to perform OCT scanning. 4. Surgical patients (anterior segment surgery-corneal and cataract diseases): Pediatric patients: The cornea and cataract surgery studies will be restricted to adults (= 18 years). Children do not have cataract surgery typically by residents and therefore would not fit our study design. Similarly pediatric corneal transplants are very rare.

Study Design


Intervention

Device:
Microscope integrated optical coherence tomography
This is translational study in which subjects will either be imaged with a microscope integrated optical coherence tomography (MIOCT) system or they will use MIOCT during surgical procedures. OCT systems are optical imaging technology that allow non-contact imaging of the microanatomy of the retina, cornea, optic nerve head and retinal blood vessels. The MIOCT has been integrated into the surgical microscope used in retinal and anterior segment surgeries so it does not touch the eye. Unlike visible light from many examination devices, the infrared OCT beam is barely visible to the human eye as it sweeps across the retina. Thus the patient is not disturbed by the light.

Locations

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

Sponsors (2)

Lead Sponsor Collaborator
Duke University National Eye Institute (NEI)

Country where clinical trial is conducted

United States, 

Outcome

Type Measure Description Time frame Safety issue
Primary Retinal and/or corneal microscope integrated optical coherence tomography image capture Ability to capture images Year 1
Primary Quality of retinal and/or corneal microscope integrated optical coherence tomography image capture Quality of MIOCT images scored based on standard microanatomy and ability to detect presence or absence of ocular pathologies based on review by a masked grader. Year 1
Primary Retinal vascular flow on optical coherence tomography angiography (OCTA) versus fluorescein angiography Cross correlation of ability to capture vessels and vessel pathology between OCTA and fluorescein angiographic images. Year 1
Primary Assessment of change in pattern of ocular vascular flow before and after standard clinical surgical steps. Presence or absence of change in ocular morphology in pattern of vascular flow compared to prior to surgical steps Year 1
Primary Assessment of change in ocular morphology before and after standard surgical steps Presence or absence of change in ocular morphology before and after standard surgical steps Year 1
Primary Estimate of subretinal fluid volume before and after surgery for retinal detachment based on surgical view versus based on OCT output Volume estimates from surgeons analyzed relative to the postoperative calculated volume from the intraoperative MIOCT Year 1
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