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Completed

NCT Number: NCT05857124

A Study Evaluating the Efficacy of the Vielight Neuro RX Gamma in the Treatment of Post COVID-19 Cognitive Impairment

Some people who have been infected with the virus that causes COVID-19 can experience long-term effects from their infection, known as post COVID-19 conditions (PCC) or long COVID1. The medical circles often describe it as post-acute sequelae of Covid-19 (PASC). People with post-COVID conditions can have a wide range of symptoms that can last more than four weeks or even months after infection. Sometimes the symptoms can even go away or come back again. The Centers for Disease and Prevention (CDC) listed a constellation of 19 symptoms related to post COVID-19.

In research, brain fog is prominent among the most reported neurological symptoms which also include, numbness, tingling, headache, dizziness, blurred vision, tinnitus, and fatigue that last more than a year post-infection.

Vielight Inc. has developed a compact and portable device named the "Vielight RX Gamma", which is suitable for home use. The intervention is based on the science of photobiomodulation (PBM) which utilizes certain light energy to modify cellular functions. The fundamental mechanisms of PBM are based on the absorption of photons by the mitochondria to modulate cellular functions. The Vielight Neuro RX Gamma delivers light of specific wavelengths (810 nm), power and duration to the brain/nasal cavity to achieve this. The biological process involves numerous interacting mechanisms that modulate bodily functions. One result of PBM is the benefits it could offer the post COVID-19 (long COVID) population. The Vielight Neuro RX Gamma emitting NIR might reduce inflammatory markers relevant to COVID-19 and since it pulses at 40 Hz can activate the non-inflammatory M2-genotype microglia to remove markers of Alzheimer disease, such as beta-amyloid and possibly tau deposits. Using Vielight Neuro RX Gamma, the same activation of non-inflammatory markers might occur with post COVID-19 (long-COVID) patient population as well as the reduction in the brain fog.

This trial utilizes a completely remote and virtual design. It is a double blind randomized controlled trial that is expected to involve 36 participants who are confirmed to have Post- COVID cognitive impairment. Eighteen of the participants will be randomized to the active Vielight RX Gamma protocol, and the other eighteen participants will be randomized to the sham Vielight RX Gamma regimen. The trial will study patients over 120 days and ask them to track their symptoms in a daily survey.

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Key information

Age range

18 year–65 year

Sex eligibility

All sexes

Study type

Interventional

Phase

Phase 1

Primary location

Ascada Research

Fullerton, California, 92835, United States

Who can participate

Healthy volunteers accepted: No

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

  • Male or female age 18-65.
  • Diagnosed with Post COVID cognitive impairment who meets WHO-defined post-COVID-19 condition
  • Mini Mental State Examination (MMSE) score of <27
  • Capable of filling out an online patient diary in English.

Exclusion criteria

  • Current symptoms are explained by a psychiatric or neurological disorder
  • Having or history of any major neurological or psychiatric illness
  • Pregnant
  • Physical, cognitive, or language impairments sufficient to adversely affect data derived from cognitive assessments or History of mild traumatic brain injury (TBI)

Treatment and study plan

Vielight Neuro RX Gamma active device

Device

The Vielight Neuro RX Gamma active device is a home-use photobiomodulation (PBM) device designed to deliver near-infrared (810 nm) light (or photons) to the brain/scalp and nasal tissues.

Vielight Neuro RX Gamma sham device

Device

The Vielight Neuro RX Gamma sham device is a home-use device similar to the Vielight Neuro RX Gamma active device, but acting as a sham.

Primary outcomes

  1. The change in the combined results of 7 Creyos items: Spatial Planning, Monkey Ladder, Rotations, Feature Match, Paired Associates, Token Search, Polygons.

    Time frame: from baseline to Day 56

Secondary outcomes

  1. Creyos scores of the 5 remaining tests (i.e. Grammatical Reasoning, Spatial Span, Digit Span, Odd One Out, Double Trouble)

    Time frame: 0, 14, 28, 56 and 84 days

  2. EQ-5D-5L Quality of Life

    Time frame: 0, 14, 28, 56 and 84 Days

  3. Fatigue Assessment Scale (FAS)

    Time frame: 0, 56 and 84 Days

  4. The perceived deficits questionnaire - 20 item version (PDQ-20)

    Time frame: 0, 56 and 84 days

  5. Compliance and Technical Complications

    Time frame: 0 to Day 56

  6. Modified Symptom Burden Questionnaire

    Time frame: 0 and 56 Days

    (Breathing Pain Fatigue Memory, Thinking and Communication Sleep Ears, Nose and Throat Stomach and Digestion Other Symptoms)

Other outcomes

  1. Exploratory Endpoints

    Time frame: 0 to Day 56

    Statistical analysis of the Creyos changes between treatment groups may warrant further exploration of the primary endpoint model

Sponsors and collaborators

Lead sponsor

Vielight Inc.

Industry

Registry information

Official study title

A Pilot Study Evaluating the Efficacy of the Vielight Neuro RX Gamma in the Treatment of Post COVID-19 Cognitive Impairment

Important dates

Study start
2023
Primary completion
2024
Study completion
2025
First posted
May 12, 2023
Registry last updated
Jun 15, 2025

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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