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Efficacy of Electrical Micro-current Retinal Stimulation for Treatment of Dry Age-related Macular Degeneration

Primary Purpose

Macular Degeneration

Status
Completed
Phase
Phase 1
Locations
Study Type
Interventional
Intervention
Tesmac
Sham Tesmac device
Sponsored by
Acuity Medical International, Inc.
About
Eligibility
Locations
Arms
Outcomes
Full info

About this trial

This is an interventional treatment trial for Macular Degeneration focused on measuring Age-related macular degeneration, electrical stimulation, randomized, double blind

Eligibility Criteria

50 Years - undefined (Adult, Older Adult)All SexesDoes not accept healthy volunteers

Inclusion Criteria:

  1. Diagnosis of Macular Degeneration, i.e., at least three, hard or soft drusen must be present there must be RPE changes (migration, clumping or atrophy) within the central 6mm of the retina.
  2. As a prerequisite for entry into the study, all patients will have their diagnosis of dry AMD confirmed by an ophthalmologist via a retinal exam and Fluorescein Angiography will also determine whether or not the subject is a candidate for laser surgery. Only subjects who have AMD will be admitted to the study.
  3. Both sexes are eligible.
  4. The best-corrected visual acuity can be no better than 20/40 and no worse than 20/100 in the treated eyes.
  5. Age greater than 50.
  6. Subjects must be highly motivated, alert, oriented, mentally competent and able to understand and comply with the requirements of the study, abide by the restrictions, return for all required visits, and provide voluntary informed consent.
  7. Both eyes of the subject must show no evidence of wet AMD. If one eye is wet and the fellow eye is dry, the subject will be excluded.

Exclusion Criteria:

  1. Subjects with seizure disorders.
  2. Subjects with additional eye-related diseases that have associated ongoing retinal bleeding.
  3. Subjects with any implanted electrical device.
  4. Subjects who have smoked, on average, more than half a pack of cigarettes per day during the last 5 years.
  5. Subjects with known allergy to contrast dye.
  6. Subjects who are in poor general health, have unstable diseases, are terminally ill, have a life expectancy of less than 12 months, are non-ambulatory or bedridden, live in a geographical location which would likely prevent regular attendance at study visits or are considered not suitable for participation by the investigator.
  7. Subjects exposed to an investigational device or drug within the past 30 days or involved concurrently in other treatment clinical trials. Note: Subjects participating in studies investigating the natural progression of AMD may not participate in this trial.
  8. Subjects unwilling to adhere to visit or examination schedules as described in the study protocol.
  9. Subjects with a known history of alcoholism, drug abuse, psychosis, clinical evidence of depression, poor motivation, emotional or intellectual problems, or any other conditions which would likely limit validity of consent or appropriate responses to participate in the study or who are deemed unsuitable psychologically or physiologically for study participation by the investigator.
  10. Any subject experiencing an acute stressor that, in the opinion of the investigator, might affect the course or treatment of AMD.
  11. Anyone with diagnosis of malignant or poorly controlled glaucoma in the eye(s) that would be treated.
  12. Anyone with diabetic retinopathy.
  13. Anyone with a progressive corneal dystrophy in the eye(s) that would be treated.
  14. Anyone with any noted chorio retinal disease (other than AMD) in the eye(s) that would be treated.
  15. Anyone with a progressive nuclear cataract in the eye(s) that would be treated. Stable cortical cataract patients may be included. Any patient with an immature cataract, one in which scattered opacities are separated by clear zones, may be included in the study. All patients with mature, hypermature or morgagnian cataracts in the eye(s) that would be treated will be excluded. Patients with a grade 3 or grade 4 cataract in the eye(s) that would be treated will be excluded. Grade 1 and Grade 2 cataract patients may be included in this study.
  16. Subjects participating in an AMD natural history study.
  17. Subjects with one eye diagnosed with wet AMD.
  18. Subjects with any previous retinal bleeding, injury, or retinal surgery.
  19. Subjects that have previously been diagnosed with amblyopia.
  20. Subjects currently taking blood-thinning medication.
  21. Subjects cannot have previously been involved in a TESMAC™ study.
  22. Subjects that take two or more of the following antioxidants daily at the following doses: 500 milligrams of vitamin C; 400 international units of vitamin E; 15 milligrams of beta-carotene; 80 milligrams of zinc as zinc oxide; and two milligrams of copper as cupric oxide and have done this for more than 2 years. These subjects may be included, but their study results will be analyzed separately.

Sites / Locations

    Arms of the Study

    Arm 1

    Arm 2

    Arm Type

    Placebo Comparator

    Active Comparator

    Arm Label

    Sham

    Tesmac

    Arm Description

    Treatment with inactivate Tesmac device

    Treatment with active Tesmac device

    Outcomes

    Primary Outcome Measures

    Change in visual acuity
    Change in visual acuity as measured with ETDRS eye chart

    Secondary Outcome Measures

    Full Information

    First Posted
    May 14, 2012
    Last Updated
    May 15, 2012
    Sponsor
    Acuity Medical International, Inc.
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    1. Study Identification

    Unique Protocol Identification Number
    NCT01600300
    Brief Title
    Efficacy of Electrical Micro-current Retinal Stimulation for Treatment of Dry Age-related Macular Degeneration
    Official Title
    A Double-Blind, Placebo-Controlled Feasibility Study to Evaluate the Efficacy of TESMAC™ (Transcutaneous Electrical Stimulation of the Macula)
    Study Type
    Interventional

    2. Study Status

    Record Verification Date
    May 2012
    Overall Recruitment Status
    Completed
    Study Start Date
    August 2002 (undefined)
    Primary Completion Date
    April 2004 (Actual)
    Study Completion Date
    April 2004 (Actual)

    3. Sponsor/Collaborators

    Responsible Party, by Official Title
    Sponsor
    Name of the Sponsor
    Acuity Medical International, Inc.

    4. Oversight

    5. Study Description

    Brief Summary
    Hypothesis: external electrical stimulation of the retina with low level electrical currents improves visual acuity in subjects with age-related dry macular degeneration.

    6. Conditions and Keywords

    Primary Disease or Condition Being Studied in the Trial, or the Focus of the Study
    Macular Degeneration
    Keywords
    Age-related macular degeneration, electrical stimulation, randomized, double blind

    7. Study Design

    Primary Purpose
    Treatment
    Study Phase
    Phase 1, Phase 2
    Interventional Study Model
    Parallel Assignment
    Masking
    ParticipantCare ProviderInvestigatorOutcomes Assessor
    Allocation
    Randomized
    Enrollment
    40 (Actual)

    8. Arms, Groups, and Interventions

    Arm Title
    Sham
    Arm Type
    Placebo Comparator
    Arm Description
    Treatment with inactivate Tesmac device
    Arm Title
    Tesmac
    Arm Type
    Active Comparator
    Arm Description
    Treatment with active Tesmac device
    Intervention Type
    Device
    Intervention Name(s)
    Tesmac
    Other Intervention Name(s)
    Theramac
    Intervention Description
    Subjects were treated twice daily for five consecutive days, followed by two days untreated, and then treated twice daily for five more consecutive days.
    Intervention Type
    Device
    Intervention Name(s)
    Sham Tesmac device
    Intervention Description
    Treatment with inactivated Tesmac device on the same schedule as the group treated with the active Tesmac device.
    Primary Outcome Measure Information:
    Title
    Change in visual acuity
    Description
    Change in visual acuity as measured with ETDRS eye chart
    Time Frame
    Day 5, Day 12

    10. Eligibility

    Sex
    All
    Minimum Age & Unit of Time
    50 Years
    Accepts Healthy Volunteers
    No
    Eligibility Criteria
    Inclusion Criteria: Diagnosis of Macular Degeneration, i.e., at least three, hard or soft drusen must be present there must be RPE changes (migration, clumping or atrophy) within the central 6mm of the retina. As a prerequisite for entry into the study, all patients will have their diagnosis of dry AMD confirmed by an ophthalmologist via a retinal exam and Fluorescein Angiography will also determine whether or not the subject is a candidate for laser surgery. Only subjects who have AMD will be admitted to the study. Both sexes are eligible. The best-corrected visual acuity can be no better than 20/40 and no worse than 20/100 in the treated eyes. Age greater than 50. Subjects must be highly motivated, alert, oriented, mentally competent and able to understand and comply with the requirements of the study, abide by the restrictions, return for all required visits, and provide voluntary informed consent. Both eyes of the subject must show no evidence of wet AMD. If one eye is wet and the fellow eye is dry, the subject will be excluded. Exclusion Criteria: Subjects with seizure disorders. Subjects with additional eye-related diseases that have associated ongoing retinal bleeding. Subjects with any implanted electrical device. Subjects who have smoked, on average, more than half a pack of cigarettes per day during the last 5 years. Subjects with known allergy to contrast dye. Subjects who are in poor general health, have unstable diseases, are terminally ill, have a life expectancy of less than 12 months, are non-ambulatory or bedridden, live in a geographical location which would likely prevent regular attendance at study visits or are considered not suitable for participation by the investigator. Subjects exposed to an investigational device or drug within the past 30 days or involved concurrently in other treatment clinical trials. Note: Subjects participating in studies investigating the natural progression of AMD may not participate in this trial. Subjects unwilling to adhere to visit or examination schedules as described in the study protocol. Subjects with a known history of alcoholism, drug abuse, psychosis, clinical evidence of depression, poor motivation, emotional or intellectual problems, or any other conditions which would likely limit validity of consent or appropriate responses to participate in the study or who are deemed unsuitable psychologically or physiologically for study participation by the investigator. Any subject experiencing an acute stressor that, in the opinion of the investigator, might affect the course or treatment of AMD. Anyone with diagnosis of malignant or poorly controlled glaucoma in the eye(s) that would be treated. Anyone with diabetic retinopathy. Anyone with a progressive corneal dystrophy in the eye(s) that would be treated. Anyone with any noted chorio retinal disease (other than AMD) in the eye(s) that would be treated. Anyone with a progressive nuclear cataract in the eye(s) that would be treated. Stable cortical cataract patients may be included. Any patient with an immature cataract, one in which scattered opacities are separated by clear zones, may be included in the study. All patients with mature, hypermature or morgagnian cataracts in the eye(s) that would be treated will be excluded. Patients with a grade 3 or grade 4 cataract in the eye(s) that would be treated will be excluded. Grade 1 and Grade 2 cataract patients may be included in this study. Subjects participating in an AMD natural history study. Subjects with one eye diagnosed with wet AMD. Subjects with any previous retinal bleeding, injury, or retinal surgery. Subjects that have previously been diagnosed with amblyopia. Subjects currently taking blood-thinning medication. Subjects cannot have previously been involved in a TESMAC™ study. Subjects that take two or more of the following antioxidants daily at the following doses: 500 milligrams of vitamin C; 400 international units of vitamin E; 15 milligrams of beta-carotene; 80 milligrams of zinc as zinc oxide; and two milligrams of copper as cupric oxide and have done this for more than 2 years. These subjects may be included, but their study results will be analyzed separately.
    Overall Study Officials:
    First Name & Middle Initial & Last Name & Degree
    Richard Beauchemin, MD
    Organizational Affiliation
    WNC Eye Care Associates PA
    Official's Role
    Principal Investigator

    12. IPD Sharing Statement

    Learn more about this trial

    Efficacy of Electrical Micro-current Retinal Stimulation for Treatment of Dry Age-related Macular Degeneration

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