Actively Recruiting
Ocular Examination with Optical Transmission Tomography (OTT) Compared to OCT and Specular Microscopy for Glaucoma and Other Eye Diseases
Led by Centre Hospitalier National d'Ophtalmologie des Quinze-Vingts · Updated on 2025-05-16
300
Participants Needed
1
Research Sites
260 weeks
Total Duration
On this page
AI-Summary
What this Trial Is About
Researchers are evaluating a new imaging technology called optical transmission tomography (OTT) that provides high-resolution images of the front parts of the eye. This advanced imaging aims to improve understanding of eye diseases by overcoming the limitations of current clinical imaging systems such as optical coherence tomography (OCT), which have restrictions in resolution, speed, and functional access. The study includes both healthy volunteers and patients with various eye conditions affecting the cornea, ocular surface, lens, or glaucoma. Participants will undergo imaging examinations using three different systems: OTT, OCT, and specular microscopy (SM). For healthy subjects, imaging sessions with each system will be performed twice, at the start and again after two years. For patients, imaging will be done at inclusion and follow-up visits based on their disease assessment schedule, lasting up to four years. Multiple images will be taken by two different operators at different positions during these sessions. During the study, researchers will assess image quality, endothelial cell density, and the ability to visualize new corneal and lens structures over periods ranging from one day to four years. Participants will have multiple imaging sessions and evaluations performed by different operators to ensure detailed data collection. The study will monitor and compare these imaging methods to better understand eye structures and diseases over time.
CONDITIONS
Official Title
oCular Examination at Cell RESolution With Optical TransmissionTomography
Who Can Participate
Eligibility Criteria
You may qualify if you...
- Patients aged 18 to 80 years
- Male or female
- Have an ocular disease affecting the cornea, ocular surface, lens (cataract), glaucoma, or require refractive surgery or post-refractive surgery follow-up
- Covered by the French Assurance Maladie
- Have signed an express, free and informed consent form
- Healthy volunteers aged 18 to 80 years
- Male or female
- Healthy with no known eye pathology affecting ocular structures
- Covered by the French Assurance Maladie
- Have signed an express, free and informed consent form
You will not qualify if you...
- Unable to hold a still position on a standard ophthalmic chin rest
- Having conjunctivitis or another active contagious eye disease
- Having an implanted pacemaker or other electronic medical device
- Having a predisposition to iridocorneal angle closure
- Being a vulnerable person or under legal protection (including pregnant or breast-feeding women, persons under guardianship)
AI-Screening
AI-Powered Screening
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Trial Site Locations
Total: 1 location
1
Centre Hospitalier National d'Ophtalmologie des Quinze-Vingts
Paris, France, 75012
Actively Recruiting
Research Team
N
Nabil BROUK
How is the study designed?
Study Type
INTERVENTIONAL
Masking
NONE
Allocation
NON_RANDOMIZED
Model
PARALLEL
Primary Purpose
OTHER
Number of Arms
2
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