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Effects of Gunnar Computer Glasses on Viewing Comfort and Performance

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ClinicalTrials.gov Identifier: NCT02925884
Recruitment Status : Terminated (The sponsor failed to provide financial support as promised.)
First Posted : October 6, 2016
Last Update Posted : October 6, 2016
Sponsor:
Collaborator:
Gunnar Optiks
Information provided by (Responsible Party):
Yu-Chi Tai, Pacific University

Brief Summary:

The proposed study aims to test if Gunnar computer glasses provide any advantages, in comparison to no glasses, on the following aspects in computer-related office work:

  • Any enhancement on visual performance of basic visual function, including visual acuity, contrast sensitivity, color discrimination, etc.
  • Any enhancement on visual performance of typical office work, including reading, word-spelling check, number searching, or target identification.
  • Any benefit in objective viewing comfort measured with viewing distance, blink frequency, post-viewing pupil size.
  • Any benefit in subjective viewing comfort reflected on the questionnaire of viewing symptom survey.
  • Any benefit in viewing comfort and visual performance with increased environmental ventilation or under strong glare.
  • Any benefit in life quality from daily wearing (e.g., better comfort or sleep quality).

Condition or disease Intervention/treatment Phase
Dry Eye Eye Strain Visual Acuity Color Perception Reading Device: Gunnar OTC Glasses Condition Not Applicable

  Show Detailed Description

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Study Type : Interventional  (Clinical Trial)
Actual Enrollment : 34 participants
Allocation: Non-Randomized
Intervention Model: Crossover Assignment
Masking: None (Open Label)
Official Title: The Effect of Computer Eyewear on Viewing Comfort and Performance in Office Work
Study Start Date : June 2013
Actual Primary Completion Date : September 2013
Actual Study Completion Date : September 2013

Resource links provided by the National Library of Medicine

MedlinePlus related topics: Eye Wear

Arm Intervention/treatment
Experimental: Gunnar OTC Glasses Condition
Intervention: Gunnar Over-The-Counter Glasses with lens (subjects will wear the glasses with lens while performing visual tasks on computers.
Device: Gunnar OTC Glasses Condition
Gunnar Over-The-Counter Computer Glasses have optical power of 0.5 diopter for reducing accommodation demands at typical computer-viewing distance. The lens also have a partially transmissive yellow tinting and anti-reflective coating for filtering part of the spectral peaks in typical fluorescent or incandescent light. The frame has a wrape-around design meant to reduce air flow in the vicinity of the eyes.

No Intervention: Control Condition
Subjects will be wearing an identical frame without any lens while performing visual tasks on computers.



Primary Outcome Measures :
  1. Subjective rating of Gunnar computer glasses preference [ Time Frame: Measurement was taken at the end of the study for each subject, up to 16 days. Data collection and preliminary analysis has been completed. ]
    At the end of the study, subjects were asked to rate their satisfaction level of using the Gunnar OTC computer glasses on improving viewing comfort task performance.


Secondary Outcome Measures :
  1. Viewing discomfort [ Time Frame: Subjective ratings of discomfort were assessed after each condition on the second and third visits, up to 16 days. Data collection and preliminary analysis has been completed. ]
    Subjects subjective rating of viewing comfort with the assigned treatment on the Viewing Symptom Survey. They will rate their discomfort sensation on a 5-point Likert scale for symptoms including: dry or watery eyes, tired eyes, irritated eyes, ache in or behind the eyes, sensation of eye-pulling, sensation of eye-burning, sensitive to lights, blurred vision, double vision, difficulty in adjusting eye focus, difficulty in seeing things with bright light, difficulty in seeing things with normal light, distortion in object shapes, distortion in object colors.

  2. Visual acuity [ Time Frame: Performance was measured in each condition on the second and third visits, up to 16 days. Data collection and preliminary analysis has been completed. ]
    subject's ability in identifying high- and low-contrast objects

  3. Color perception [ Time Frame: Performance was measured in each condition on the second and third visits, up to 16 days. Data collection and preliminary analysis has been completed. ]
    subject's ability to identify the number of shades of a color

  4. Reading [ Time Frame: Performance was measured in each condition on the second and third visits, up to 16 days. Data collection and preliminary analysis has been completed. ]
    subject's reading speed and speed and accuracy in spelling check

  5. Dry eye measurements [ Time Frame: Measurement was taken at baseline and after each condition on the second and third visits, up to 16 days. Data collection and preliminary analysis has been completed. ]
    Dry eye condition was measured with one subjective measurement on a standardized survey (Ocular Surface Disease Index , OSDI) and four objective measurements: (1)Tear Break-Up Time (TBUT), (2) tear osmolarity with The TearLab Osmolarity System), (3) corneal integrity with Lissamine green, and (4) real-time blink-contingent visual acuity.



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Ages Eligible for Study:   18 Years to 42 Years   (Adult)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   Yes
Criteria

Inclusion Criteria:

  • Subjects must be in the age between 18 to 42 years old.
  • Subjects must have normal color vision (be able to identify the numbers in the color blind test.
  • Subjects' near and far visual acuity with the better eye needs to be 20/25 (measured with a vision chart or better). Subjects can wear contact lenses (but not glasses) if usually wear them while working on computers.
  • Subjects must routinely work on a computer or digital display for average 4 hours or more each day.
  • Subjects can communicate in English fluently, and are used to read English documents on computer.
  • Subjects with existing conditions of dry eye or eye strain will be recorded and serve as a covariate to determine the experimental effect.
  • Subjects must have valid tax number or social security number to receive monetary compensation.

Exclusion Criteria:

  • The difference on the prescription for both eyes is equal to or larger than 2 Diopters.
  • Subjects have cataract or have had cataract surgery.
  • Subjects are sensitive to lights (photosensitivity).
  • Subjects have prior incidents or are known to have claustrophobia.
  • Subjects have been diagnosed with oculomotor diseases or central nervous system diseases, or with developmental, neurological, or psychiatric disorders (e.g., attention deficit hyperactivity disorder, autism, mental retardation).

Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT02925884


Locations
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United States, Oregon
Vision Performance Institute, Pacific University
Forest Grove, Oregon, United States, 97116
Sponsors and Collaborators
Pacific University
Gunnar Optiks
Investigators
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Principal Investigator: Yu-Chi Tai, PhD Pacific University

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Responsible Party: Yu-Chi Tai, Research Scientist, Pacific University
ClinicalTrials.gov Identifier: NCT02925884     History of Changes
Other Study ID Numbers: PUIRB075-13
Gunnar2013 ( Other Grant/Funding Number: Gunnar Optiks )
First Posted: October 6, 2016    Key Record Dates
Last Update Posted: October 6, 2016
Last Verified: October 2016
Individual Participant Data (IPD) Sharing Statement:
Plan to Share IPD: No
Plan Description: All 34 subjects were recruited but data collection was early terminated. Data entry was not completed.
Additional relevant MeSH terms:
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Asthenopia
Eye Diseases
Methamphetamine
Central Nervous System Stimulants
Physiological Effects of Drugs
Sympathomimetics
Autonomic Agents
Peripheral Nervous System Agents
Dopamine Agents
Neurotransmitter Agents
Molecular Mechanisms of Pharmacological Action
Adrenergic Agents
Adrenergic Uptake Inhibitors
Neurotransmitter Uptake Inhibitors
Membrane Transport Modulators
Dopamine Uptake Inhibitors