ClinicalTrials.gg
CompletedNCT03318549Updated Nov 26, 2024Results posted

BCI and Evaluation of Visual and Task Performance in Subjects With Eye Diseases

An interventional study of Visual Performance tests and Brain-computer interface in Glaucoma, Macular Degeneration and Glaucoma Suspect, sponsored by University of Miami. Completed at 1 site in United States. Open to participants aged 18 Years to 90 Years, including healthy volunteers. Per ClinicalTrials.gov, last updated 2024-11-26.

Sponsored by University of Miami · Not applicable, Interventional, and Diagnostic

Phase
Not applicable
Study type
Interventional
Enrollment
115
Allocation
Non-randomized
Ages
18 Years to 90 Years
Sex
All
01

Study summary

The purpose of this research study is to better understand the impact of visual impairment caused by different eye diseases on the ability to perform daily activities and compare it to that in patients without eye diseases.

02

Conditions studied

  • Glaucoma
  • Macular Degeneration
  • Glaucoma Suspect
  • Optic Neuropathy
  • Retinal Degeneration
  • Visual Pathway Disorder

Keywords

  • virtual reality
  • glaucoma
  • age related macular degeneration
  • quality of life
  • visual field
  • optical coherence tomography
  • brain-computer interface
03

In context

Glaucoma

1,419 studies on the registry are indexed under Glaucoma; 223 are open to participants now.

This study's enrollment of 115 is above the median of 61 across 964 interventional studies indexed under Glaucoma.

Browse Glaucoma studies →

Lead sponsor

University of Miami is the lead sponsor of 840 studies on the registry; 164 are open to participants now.

Of its 115 completed or terminated interventional studies of FDA-regulated products, 97 (84%) have results posted.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years to 90 Years
Sexes eligible
All
Accepts healthy volunteers
Yes

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  • Subjects must be between the ages of 18 and 90 years old;
  • Both males and females will be included.
  • Be able and willing to provide signed and follow study instructions

Exclusion criteria

Exclusion Criteria:

  • Subjects will be excluded if they present with any systemic conditions that in the opinion of the Principal Investigator may prevent them from completing the tests.
Terms in these criteria, in plain language(1)

Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.

Informed consent

Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.

You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.

05

Study design

Phase
Not applicable
Primary purpose
Diagnostic
Allocation
Non-randomized
Intervention model
Parallel assignment
Masking
None (open label)
Enrollment
115 participants (actual)

Study arms

  • Other
    Glaucoma group

    Patients with diagnosed glaucoma will be in the group for up to 5 years.

    Diagnostic Test: Visual Performance tests · Device: Brain-computer interface

  • Other
    Suspicious of having glaucoma group

    Patients with suspicious of having glaucoma will be in the group for up to 5 years.

    Diagnostic Test: Visual Performance tests · Device: Brain-computer interface

  • Other
    Non-glaucomatous optic neuropathies group

    Patients with optic neuropathies that do not look glaucomatous-like will be in the group for up to 5 years.

    Diagnostic Test: Visual Performance tests

  • Other
    Age-related macular degeneration (AMD) group

    Patients with diagnosed age-related macular degeneration will be in the group for up to 5 years.

    Diagnostic Test: Visual Performance tests

  • Other
    Retinal degenerations group

    Patients with other retinal degenerations excluding AMD will be in the group for up to 5 years.

    Diagnostic Test: Visual Performance tests

  • Other
    Other diseases of visual pathways group

    Other diseases of the visual pathway not included in the previous groups will be in the group for up to 5 years.

    Diagnostic Test: Visual Performance tests

  • Other
    Healthy control group

    Patients labeled as healthy controls for not having any other eye diseases that would be included on the other groups will be in the group for up to 5 years.

    Diagnostic Test: Visual Performance tests · Device: Brain-computer interface

Interventions

  • Diagnostic testVisual Performance tests

    Participants came to the clinic in person for 2 hours for visual performance tests once every 6 months for up to 5 years. These tests included virtual reality tests and tests on a computer screen to investigate performance during simulated daily life activities, such as driving, situations of low contrast and glare.

  • DeviceBrain-computer interface

    The brain-computer interface (BCI) consists of a modified virtual reality goggle integrated with wireless no-prep electroencephalogram (EEG). The portable BCI is able to objectively measure multifocal steadystate visual evoked potentials in response to brain stimulation through presentation of visual stimuli in the goggle. The test is done in person and may take up to 30 minutes, once every 6 months for up to 5 years.

06

What researchers measure

Primary outcomes

  1. Visual Impairment Measured by Visual Functioning Test

    The study team will evaluate visual impairment through a composite score of visual functioning test, ranging from 0 to 100, with lower scores indicating worse visual impairment.

    Time frame: 4.5 years

  2. Number of Eyes Showing Progression

    The number of eyes showing progression (expressed in percentage) will be compared between the home-based Brain-computer interface (BCI) testing and standard clinical testing (standard automated perimetry, SAP)

    Time frame: 4.5 years

  3. Time to Detect Progression Measured in Years

    The time to detect progression (years) will be compared between the home-based Brain-computer interface testing and standard clinical testing (standard automated perimetry).

    Time frame: 4.5 years

Secondary outcomes

  1. Standard Automated Perimetry Will be Assessed by the C-index

    c-index will be calculated by the proportion of concordant pairs divided by the total number of possible evaluation pairs for progression. c-index is unitless.

    Time frame: 4.5 years

  2. Patient-reported Quality of Life as Measured by the National Eye Institute (NEI) Visual Function Questionnaire (VFQ) 25

    The scores on the NEI VFQ-25 subscale ranges from 0 to 100, with a higher score indicating greater functioning.

    Time frame: 4.5 years

07

Results

Posted Nov 26, 2024
Limitations and caveats
No patients were enrolled during the study period for groups: Non-glaucomatous optic neuropathies group; Age-related macular degeneration (AMD) group; Retinal degenerations group; Other diseases of visual pathways group. A limited number of patients reached the 5-year follow-up mark, which did not provide enough power for progression analysis.

Participant flow

Participant flow — Overall Study
MilestoneHealthy Control GroupGlaucoma GroupSuspicious of Having Glaucoma GroupNon-glaucomatous Optic Neuropathies GroupAge-related Macular Degeneration (AMD) GroupRetinal Degenerations GroupOther Diseases of Visual Pathways Group
Started1489120000
Completed96360000
Not completed52660000
Withdrew: Withdrawal by subject51920000
Withdrew: Physician decision0410000
Withdrew: Lost to follow-up0330000

Outcome measures

PrimaryVisual Impairment Measured by Visual Functioning Test

The study team will evaluate visual impairment through a composite score of visual functioning test, ranging from 0 to 100, with lower scores indicating worse visual impairment.

Time frame:
4.5 years
Reported as:
Mean · score on a scale
Visual Impairment Measured by Visual Functioning Test
score on a scaleHealthy Control GroupGlaucoma GroupSuspicious of Having Glaucoma GroupNon-glaucomatous Optic Neuropathies GroupAge-related Macular Degeneration (AMD) GroupRetinal Degenerations GroupOther Diseases of Visual Pathways Group
Visual Impairment Measured by Visual Functioning Test80.6 ± 5.374.2 ± 13.081.1 ± 10.4————
Statistical analysis
  • Healthy Control Group vs Glaucoma Group · t-test, 2 sided · p = 0.011
  • Glaucoma Group vs Suspicious of Having Glaucoma Group · t-test, 2 sided · p = 0.022
PrimaryNumber of Eyes Showing Progression

The number of eyes showing progression (expressed in percentage) will be compared between the home-based Brain-computer interface (BCI) testing and standard clinical testing (standard automated perimetry, SAP)

Time frame:
4.5 years
Reported as:
Count of units · eyes
Number of Eyes Showing Progression
eyesHealthy Control GroupGlaucoma GroupSuspicious of Having Glaucoma GroupNon-glaucomatous Optic Neuropathies GroupAge-related Macular Degeneration (AMD) GroupRetinal Degenerations GroupOther Diseases of Visual Pathways Group
Progression by BCI only—337————
Progression by SAP only—260————
Progression by BCI and SAP—152————
No progression—9611————
Statistical analysis
  • Glaucoma Group vs Suspicious of Having Glaucoma Group · Chi-squared · p = 0.303
PrimaryTime to Detect Progression Measured in Years

The time to detect progression (years) will be compared between the home-based Brain-computer interface testing and standard clinical testing (standard automated perimetry).

Time frame:
4.5 years
Reported as:
Mean · years
Time to Detect Progression Measured in Years
yearsHealthy Control GroupGlaucoma GroupSuspicious of Having Glaucoma GroupNon-glaucomatous Optic Neuropathies GroupAge-related Macular Degeneration (AMD) GroupRetinal Degenerations GroupOther Diseases of Visual Pathways Group
SAP—3.3 ± 1.32.9 ± 0.0————
BCI—2.7 ± 1.52.9 ± 0.0————
SecondaryStandard Automated Perimetry Will be Assessed by the C-index

c-index will be calculated by the proportion of concordant pairs divided by the total number of possible evaluation pairs for progression. c-index is unitless.

Time frame:
4.5 years
Reported as:
Number · unitless
Standard Automated Perimetry Will be Assessed by the C-index
unitlessHealthy Control GroupGlaucoma GroupSuspicious of Having Glaucoma GroupNon-glaucomatous Optic Neuropathies GroupAge-related Macular Degeneration (AMD) GroupRetinal Degenerations GroupOther Diseases of Visual Pathways Group
Standard Automated Perimetry Will be Assessed by the C-index—.652.667————
SecondaryPatient-reported Quality of Life as Measured by the National Eye Institute (NEI) Visual Function Questionnaire (VFQ) 25

The scores on the NEI VFQ-25 subscale ranges from 0 to 100, with a higher score indicating greater functioning.

Time frame:
4.5 years
Reported as:
Mean · score on a scale
Patient-reported Quality of Life as Measured by the National Eye Institute (NEI) Visual Function Questionnaire (VFQ) 25
score on a scaleHealthy Control GroupGlaucoma GroupSuspicious of Having Glaucoma GroupNon-glaucomatous Optic Neuropathies GroupAge-related Macular Degeneration (AMD) GroupRetinal Degenerations GroupOther Diseases of Visual Pathways Group
Patient-reported Quality of Life as Measured by the National Eye Institute (NEI) Visual Function Questionnaire (VFQ) 2595.2 ± 6.191.3 ± 8.992.6 ± 5.1————
Statistical analysis
  • Healthy Control Group vs Glaucoma Group · t-test, 2 sided · p = 0.132
  • Glaucoma Group vs Suspicious of Having Glaucoma Group · t-test, 2 sided · p = 0.647

Adverse events

Collected over 4.5 years. Non-serious events are listed at a 0% frequency threshold.

Adverse event summary by group
GroupDeathsSeriousOther
Healthy Control Group0/14 (0%)0/14 (0%)0/14 (0%)
Glaucoma Group0/89 (0%)0/89 (0%)0/89 (0%)
Suspicious of Having Glaucoma Group0/12 (0%)0/12 (0%)0/12 (0%)
Non-glaucomatous Optic Neuropathies Group———
Age-related Macular Degeneration (AMD) Group———
Retinal Degenerations Group———
Other Diseases of Visual Pathways Group———

Baseline characteristics

No patients were enrolled during the study period for groups: Non-glaucomatous optic neuropathies group; Age-related macular degeneration (AMD) group; Retinal degenerations group; Other diseases of visual pathways group.

Age, Continuous
Age, Continuous(years)Healthy Control GroupGlaucoma GroupSuspicious of Having Glaucoma GroupNon-glaucomatous Optic Neuropathies GroupAge-related Macular Degeneration (AMD) GroupRetinal Degenerations GroupOther Diseases of Visual Pathways GroupTotal
Mean72.2 ± 4.267.7 ± 9.767.2 ± 10.0————68.2 ± 9.3
Sex: Female, Male
Sex: Female, Male(Participants)Healthy Control GroupGlaucoma GroupSuspicious of Having Glaucoma GroupNon-glaucomatous Optic Neuropathies GroupAge-related Macular Degeneration (AMD) GroupRetinal Degenerations GroupOther Diseases of Visual Pathways GroupTotal
Female8524————64
Male6378————51
Ethnicity (NIH/OMB)
Ethnicity (NIH/OMB)(Participants)Healthy Control GroupGlaucoma GroupSuspicious of Having Glaucoma GroupNon-glaucomatous Optic Neuropathies GroupAge-related Macular Degeneration (AMD) GroupRetinal Degenerations GroupOther Diseases of Visual Pathways GroupTotal
Hispanic or Latino020————2
Not Hispanic or Latino148712————113
Unknown or Not Reported000————0
Race (NIH/OMB)
Race (NIH/OMB)(Participants)Healthy Control GroupGlaucoma GroupSuspicious of Having Glaucoma GroupNon-glaucomatous Optic Neuropathies GroupAge-related Macular Degeneration (AMD) GroupRetinal Degenerations GroupOther Diseases of Visual Pathways GroupTotal
American Indian or Alaska Native000————0
Asian031————4
Native Hawaiian or Other Pacific Islander000————0
Black or African American1264————31
White13587————78
More than one race000————0
Unknown or Not Reported020————2
08

Study locations

1 site
  • Bascom Palmer Eye Institute
    Miami, Florida 33136, United States
09

References and documents

Study documents

PDFs hosted by the registry, ClinicalTrials.gov.

Individual participant data

Plan to share: No

10

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Nov 26, 2024, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
11

Registry details

Key details

Study ID
NCT03318549
Responsible party
Felipe Andrade Medeiros (Professor, University of Miami) — Principal investigator
First posted
Oct 24, 2017
Start date
Oct 29, 2018
Primary completion
May 31, 2023
Completion
May 31, 2023
Results posted
Nov 26, 2024
Last update
Nov 26, 2024

Study contacts

Felipe A Medeiros, MD, PhD
principal investigator · University of Miami
Henry Tseng, MD, PhD
principal investigator · Duke University

Oversight

Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

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