Healthy Subjects3D-WLTNCT02424266
Three Dimension Tomography of Eye Structures by White Light Imaging Device
An observational study of Healthy Subjects and Moderate to Severe Keratoconjunctivitis Sicca (KCS), run by Meir Medical Center.
Trial summary
The purpose of this study is to investigate the ability of an imaging device, developed by AdOM Advanced Optical Technologies Ltd. ("AdOM"). The device allows a three-dimensional imaging of the ocular tissues, specifically the tear film layers and the retinal layers. The device is based on the use of white light. Read more about this study
- Who is it for?
- Ages 18 years and olderHealthy volunteers can take part
- Conditions the study is for
- Healthy Subjects, Moderate to Severe Keratoconjunctivitis Sicca (KCS), Dry Eye Syndrome (DES)
- What is being tested?
- None invasive imaging of the tear film (AdOM)
- Type of treatment
- Medical device
- How many people
- 60 participants
- Where
- No sites listed yet
- Study dates
- Apr 2015to Jun 2016
- How long will I take part?
- 4 Weeks
- Phase
- Observational
- Are there results?
- None posted in the registry
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 18 years and older
- All sexes
- Healthy volunteers accepted
- Adult, Older adult
Study population: 20 healthy subject with no ocular disease 40 subjects with moderate to severe keratoconjunctivitis sicca or dry eye syndrome
Who may be able to join
- Age >/= 18 years Healthy controls - without dry eyes
- Patients with a diagnosis of moderate-to-severe KCS as defined by all of the following:
- The presence of at least one ocular symptom of dryness scored at > 2 (where 0 = none and 4 = very severe /interferes with normal activities)
- Positive Schirmer test (ST without anesthesia) < 7 mm/5 min in either eye
- Positive fluorescein stainig (FS), defined as a corneal punctate fluorescein staining score of > 1 in either eye, where 0 = none and 3 = severe.
Who cannot join
- Stevens-Johnson Syndrome
- Post-burn ocular injury
- Chronic ocular disease other than KCS requiring topical treatment
- Ocular herpes simplex virus infection
- Use of contact lenses
- Persistent Intraocular Inflammation or Infection
Show all 10Show fewer
- Active blepharitis of greater than mild degree
- Recent surgical occlusion of the lacrimal puncta
- Subepithelial cornea scarring
- Anesthetic or neurotrophic corneas.
Trial locations and contacts
No sites are listed yet.
About this study
The purpose of this study is to investigate the ability of an imaging device, developed by AdOM Advanced Optical Technologies Ltd. ("AdOM"). The device allows a three-dimensional imaging of the ocular tissues, specifically the tear film layers and the retinal layers. The device is based on the use of white light.
In this initial study, the device will be used to assess the tear film which coats the corneal surface in healthy subjects as well as in moderate-to-severe Keratoconjunctivitis Sicca (KCS) or Dry Eye Syndrome (DES). The ability of the device to assess the retinal layers will be evaluated in the second phase of the study.
Read the detailed description
The purpose of this study is to investigate the ability of an imaging device, developed by AdOM Advanced Optical Technologies Ltd. ("AdOM"). AdOM has produced an imaging device based on a standard fundus camera that uses white light, and as combined with new algorithms allows for a new reconstruction of three-dimensional images. The materials from which the Medical Instrumentation and Device are comprised are optical components (lenses), a broadband light source power, mechanical engines, beam splitters, and optical filters. The device will in addition contain camera sensors and a spectral detector. These elements are linked to a computer which includes control software and a user interface. The device allows a three-dimensional imaging of the ocular tissues, specifically the tear film layers and the retinal layers.
In this initial study, the device will be used to assess the tear film which coats the corneal surface in healthy subjects as well as in moderate-to-severe Keratoconjunctivitis Sicca (KCS) or Dry Eye Syndrome (DES). The ability of the device to assess the retinal layers will be evaluated in the second phase of the study.
The aqueous layer of the tear layer thickness is expected to be measured at an accuracy level of approximately one nanometer. All values will be measured over time and thus it will be possible to deduce the breakup time of the tear layer and the evaporation rate. It is possible that information will also be provided on the mucin layer and its level of sharpness.
Using the device will include the following steps:
- Resting the head and fixing it with the assistance of the chin and forehead rests.
- Locating and focusing the device on the cornea or retina with the help of the examiner.
- Identifying the retinal and vitreous layers and pressing to start measurement or, alternatively:
- Identifying the tear film layers and pressing to start the measurement.
- Pressing on the button to end the measurement. The expected measurement duration is 20 to 70 seconds. Analysis of the returned light will describe at each second the thickness of the layers and the continuity of the surface.
Study population:
A total of 20 healthy patients. A total of 40 adult male or female patients with moderate-to-severe KCS or DES.
Conduct of the Study:
This is a case-control, non-randomized observational study. The study will include two visits: a screening visit and a study visit.
During the screening visit the patients will sign the informed consent form and a full medical history will be recorded. All ocular signs and symptoms will be evaluated and a full biomicroscopic examination will be performed. Disease activity will be assessed using the Dry Eye Symptom Score (DESS), Schirmer Test (ST), tear meniscus height (TM), tear break-up time (BUT), and fluorescein staining (FS).
The second visit will be scheduled up to 4 weeks after the screening visit. During the second visit (the photography session), all ocular signs and symptoms will be evaluated and a full biomicroscopic examination will be performed. Disease activity will be assessed using the Dry Eye Symptom Score (DESS), Schirmer Test (ST), tear meniscus height (TM), tear break-up time (BUT), and fluorescein staining (FS).
The tear film layer will be photographed by the investigational device and the participation of the volunteers in the study will end with the end of the photography session.
Time frame: participants will be followed for the duration of their participation in the study which is expected to be up to 4 weeks.
- Conditions
- Healthy Subjects, Moderate to Severe Keratoconjunctivitis Sicca (KCS), Dry Eye Syndrome (DES)
- Being tested
- None invasive imaging of the tear film (AdOM)
- Keywords
- Tear film, Imaging, Tomogrophy, dry eye
- Medical subject headings
- Dry Eye Syndromes
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
None invasive imaging of the tear film (AdOM)Device
White light tomography imaging
| Study group | Role | What they receive |
|---|---|---|
| Healthy subjects | None invasive imaging of the tear film for subjects with no eye disease Receives: Device: None invasive imaging of the tear film (AdOM) | |
| keratoconjunctivits sicca (KCS) and Dry Eye Syndrome (DES) | None invasive imaging of the tear film for KCS and DES patients as confirmed by a cornea specialist Receives: Device: None invasive imaging of the tear film (AdOM) |
What is being measured
The primary outcome is the main question the study is designed to answer.
Safety (Ocular symptoms)
Ocular symptoms, including - I. pain (graded as 0-none, 1- mild discomfort, 2-moderate pain, 3- severe pain, 4- very severe), II. burning (graded as 0-none, 1- mild , 2-moderate, 3- severe, 4- very severe), itching (graded as 0-none, 1- mild , 2-moderate, 3- severe, 4-very severe) 2. Red eye (graded as 0-none, 1- mild , 2-moderate, 3- severe, 4- very severe)
Measured: One month
Secondary outcomes (2)
Imaging capabilities (field of view, resolution)
- field of view, measured in millimeters
- resolution measured in line per millimeters
Measured: On sight
Tear film measurements (lipid layer thickness, aqueous layer thickness)
- lipid layer thickness measured in microns
- aqueous layer thickness measured in microns
Measured: on sight
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted23 Apr 2015 (estimated)
- Study startApr 2015
- Primary completionDec 2015 (estimated)
- Study completionJun 2016 (estimated)
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Other trials for Healthy SubjectsStudies of the same condition, open and under way.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Observational
- Observational model
- Case-control
- Time perspective
- Prospective
- Enrolment
- 60 participants (estimated)
- Target duration
- 4 Weeks
Sponsor and investigators
- Lead sponsor
- Meir Medical Center
- Sponsor type
- University, hospital or other
- Responsible party
- Principal investigator, Avner Belkin, Meir Medical Center
- Investigators
- Noa Geffen, MD, Principal investigator, Meir Medical Center
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT02424266
- Sponsor's protocol ID
- MMC-0166-13
- Acronym
- 3D-WLT
- Status last verified
- Apr 2015
- First submitted
- 1 Apr 2015
- Last updated
- 23 Apr 2015
- Results posted
- No
- Data monitoring committee
- No
Study at a glance
From the registry record, last updated by the sponsor on 23 Apr 2015. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Three Dimension Tomography of Eye Structures by White Light Imaging Device
- ClinicalTrials.gov ID
- NCT02424266
- Acronym / sponsor ID
- 3D-WLT / MMC-0166-13
- Conditions
- Healthy Subjects, Moderate to Severe Keratoconjunctivitis Sicca (KCS), Dry Eye Syndrome (DES)
- Keywords
- Tear film, Imaging, Tomogrophy, dry eye
- Study type
- Observational
- Recruitment status
- Unknown status
- Enrolment
- 60 participants (estimated)
- Lead sponsor
- Meir Medical CenterUniversity, hospital or other
- Study start
- Apr 2015
- Primary completion
- Dec 2015 (estimated)
- Study completion
- Jun 2016 (estimated)
- First posted
- 23 Apr 2015 (estimated)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
The purpose of this study is to investigate the ability of an imaging device, developed by AdOM Advanced Optical Technologies Ltd. ("AdOM"). The device allows a three-dimensional imaging of the ocular tissues, specifically the tear film layers and the retinal layers. The device is based on the use of white light.
In this initial study, the device will be used to assess the tear film which coats the corneal surface in healthy subjects as well as in moderate-to-severe Keratoconjunctivitis Sicca (KCS) or Dry Eye Syndrome (DES). The ability of the device to assess the retinal layers will be evaluated in the second phase of the study.
Detailed description
The purpose of this study is to investigate the ability of an imaging device, developed by AdOM Advanced Optical Technologies Ltd. ("AdOM"). AdOM has produced an imaging device based on a standard fundus camera that uses white light, and as combined with new algorithms allows for a new reconstruction of three-dimensional images. The materials from which the Medical Instrumentation and Device are comprised are optical components (lenses), a broadband light source power, mechanical engines, beam splitters, and optical filters. The device will in addition contain camera sensors and a spectral detector. These elements are linked to a computer which includes control software and a user interface. The device allows a three-dimensional imaging of the ocular tissues, specifically the tear film layers and the retinal layers.
In this initial study, the device will be used to assess the tear film which coats the corneal surface in healthy subjects as well as in moderate-to-severe Keratoconjunctivitis Sicca (KCS) or Dry Eye Syndrome (DES). The ability of the device to assess the retinal layers will be evaluated in the second phase of the study.
The aqueous layer of the tear layer thickness is expected to be measured at an accuracy level of approximately one nanometer. All values will be measured over time and thus it will be possible to deduce the breakup time of the tear layer and the evaporation rate. It is possible that information will also be provided on the mucin layer and its level of sharpness.
Using the device will include the following steps:
- Resting the head and fixing it with the assistance of the chin and forehead rests.
- Locating and focusing the device on the cornea or retina with the help of the examiner.
- Identifying the retinal and vitreous layers and pressing to start measurement or, alternatively:
- Identifying the tear film layers and pressing to start the measurement.
- Pressing on the button to end the measurement. The expected measurement duration is 20 to 70 seconds. Analysis of the returned light will describe at each second the thickness of the layers and the continuity of the surface.
Study population:
A total of 20 healthy patients. A total of 40 adult male or female patients with moderate-to-severe KCS or DES.
Conduct of the Study:
This is a case-control, non-randomized observational study. The study will include two visits: a screening visit and a study visit.
During the screening visit the patients will sign the informed consent form and a full medical history will be recorded. All ocular signs and symptoms will be evaluated and a full biomicroscopic examination will be performed. Disease activity will be assessed using the Dry Eye Symptom Score (DESS), Schirmer Test (ST), tear meniscus height (TM), tear break-up time (BUT), and fluorescein staining (FS).
The second visit will be scheduled up to 4 weeks after the screening visit. During the second visit (the photography session), all ocular signs and symptoms will be evaluated and a full biomicroscopic examination will be performed. Disease activity will be assessed using the Dry Eye Symptom Score (DESS), Schirmer Test (ST), tear meniscus height (TM), tear break-up time (BUT), and fluorescein staining (FS).
The tear film layer will be photographed by the investigational device and the participation of the volunteers in the study will end with the end of the photography session.
Time frame: participants will be followed for the duration of their participation in the study which is expected to be up to 4 weeks.
Study design
- Observational model
- Case-control
- Time perspective
- Prospective
- Target follow-up
- 4 Weeks
- Number of arms
- 2
| Arm | Type | Receives |
|---|---|---|
| Healthy subjects | – | Device: None invasive imaging of the tear film (AdOM)None invasive imaging of the tear film for subjects with no eye disease |
| keratoconjunctivits sicca (KCS) and Dry Eye Syndrome (DES) | – | Device: None invasive imaging of the tear film (AdOM)None invasive imaging of the tear film for KCS and DES patients as confirmed by a cornea specialist |
Who may qualify
- Ages
- 18 years and older
- Sex
- All
- Healthy volunteers
- Accepted
- Age groups
- Adult, Older adult
- Study population
- 20 healthy subject with no ocular disease 40 subjects with moderate to severe keratoconjunctivitis sicca or dry eye syndrome
Key inclusion criteria (5 listed)
- Age >/= 18 years Healthy controls - without dry eyes
- The presence of at least one ocular symptom of dryness scored at > 2 (where 0 = none and 4 = very severe /interferes with normal activities)
- Positive Schirmer test (ST without anesthesia) < 7 mm/5 min in either eye
- Positive fluorescein stainig (FS), defined as a corneal punctate fluorescein staining score of > 1 in either eye, where 0 = none and 3 = severe.
Key exclusion criteria (10 listed)
- Stevens-Johnson Syndrome
- Post-burn ocular injury
- Chronic ocular disease other than KCS requiring topical treatment
- Ocular herpes simplex virus infection
- Use of contact lenses
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| None invasive imaging of the tear film (AdOM)White light tomography imaging | Device | Healthy subjects, keratoconjunctivits sicca (KCS) and Dry Eye Syndrome (DES) |
Primary outcome
Safety (Ocular symptoms)
Time frame: One month
Ocular symptoms, including - I. pain (graded as 0-none, 1- mild discomfort, 2-moderate pain, 3- severe pain, 4- very severe), II. burning (graded as 0-none, 1- mild , 2-moderate, 3- severe, 4- very severe), itching (graded as 0-none, 1- mild , 2-moderate, 3- severe, 4-very severe) 2. Red eye (graded as 0-none, 1- mild , 2-moderate, 3- severe, 4- very severe)
2 secondary outcomes
Imaging capabilities (field of view, resolution)
Time frame: On sight
Tear film measurements (lipid layer thickness, aqueous layer thickness)
Time frame: on sight
Results and safety
Results are not available in the source record.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 23 Apr 2015.
Related trials for Healthy Subjects
Not yet recruitingPhase 1
Dynamic Magnetic Resonance Imaging of Human Subarachnoid Space Using Intrathecal Gadolinium Contrast
Healthy Volunteers
RecruitingObservational study
Survey to Determine Incarcerated Persons' Views on Surrogate Decision Making
Healthy Volunteers
Active, not recruitingPhase 1
A Study to Learn How Different Amounts of the Study Medicine Called PF-07985631 Are Tolerated and Act in the Body of Healthy Adults
Healthy
RecruitingEarly Phase 1
Study Brain Mechanisms of Frustration With Magnetoencephalography in Healthy Volunteers
Irritability
Not yet recruitingObservational study
Assessing the Impact of Perceptions of Unpredictability on Objective Measures of Food Consumption and Metabolism
Healthy Volunteer, Obestity
Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
Noa Geffen, MD principal investigator
Meir Medical Center
Questions about this trial
What is this clinical trial studying?
An observational study of Healthy Subjects and Moderate to Severe Keratoconjunctivitis Sicca (KCS), run by Meir Medical Center.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 5 inclusion and 10 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: status not confirmed, as of the sponsor's last update on 23 Apr 2015. Status can change between updates, so confirm with the study contact before making plans.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
Are results available for this study?
Results are not available in the source record.
How can a doctor refer a patient or contact the research team?
Contact Noa Geffen, MD (+972-9-7472427, noatal1122@gmail.com), or a site near the patient. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Safety (Ocular symptoms) (time frame: One month). It is what the study was designed to measure, not a finding.
Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 23 Apr 2015.