Light to Maximize Vision, Minimize Insomnia

Overview

The purpose of this study is to determine whether specific wavelengths of light at night can be used to improve mobile balance while simultaneously not increasing alertness.

Full Title of Study: “Toileting at Night in Older Adults: Light to Maximize Vision, Minimize Insomnia”

Study Type

  • Study Type: Interventional
  • Study Design
    • Allocation: Randomized
    • Intervention Model: Crossover Assignment
    • Primary Purpose: Basic Science
    • Masking: None (Open Label)
  • Study Primary Completion Date: September 2016

Interventions

  • Other: Light

Arms, Groups and Cohorts

  • Active Comparator: Dim light
    • 15 minutes of very dim (<1 lux) light during the night
  • Active Comparator: Room light
    • 15 minutes of normal room light (~100 lux) during the night
  • Experimental: Colored light
    • 15 minutes of colored light during the night

Clinical Trial Outcome Measures

Primary Measures

  • Mobile balance
    • Time Frame: 15 minutes
    • Mobile balance as determined using a GaitRite walkway
  • Alertness
    • Time Frame: 15 minutes
    • Alertness as determined by electroencephalographic power density

Participating in This Clinical Trial

Inclusion Criteria

  • Aged 55-85 – At least 20/200 corrected visual acuity – Greater than 20° visual field with no lower visual field loss – Stable health – Male or female – Normal color vision – Normal hearing Exclusion Criteria:

  • Extreme chronotype – Sleep disorders – Dementia – Smoker – Depression – Alcohol abuse – Use of illegal drugs – Use of sleep/wake altering drugs on an acute or as needed basis (including nutraceuticals, antihistamines) – Use of light sensitizing drugs – Self-reported history of nocturia (>3 times per night)

Gender Eligibility: All

Minimum Age: 55 Years

Maximum Age: 85 Years

Are Healthy Volunteers Accepted: Accepts Healthy Volunteers

Investigator Details

  • Lead Sponsor
    • VA Palo Alto Health Care System
  • Collaborator
    • Stanford University
  • Provider of Information About this Clinical Study
    • Principal Investigator: Jamie M. Zeitzer, Ph.D., Assistant Professor – VA Palo Alto Health Care System

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