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Visual Discomfort and Reading

NCT00402155 · Status: COMPLETED · Type: OBSERVATIONAL · Enrollment: 100

Last updated 2009-11-13

No results posted yet for this study

Summary

Reading can be an uncomfortable and difficult task for some people. Symptoms include unpleasant somatic and perceptual effects, such as eye-strain, headache, and blurred text, despite normal visual acuity. This condition has been called Visual Discomfort, but little is known about the symptoms and frequency of reading problems associated with this disorder. Several studies have proposed that Visual Discomfort is caused by increased noise in the visual system due to spreading cortical activation across different spatial frequency channels. This study examines the prevalence and severity of visual discomfort in a college student population and tests the noisy visual system hypothesis.

Conditions

  • Visual Fatigue

Interventions

BEHAVIORAL

Stress on visual discomfort

Effects of visual discomfort are measured by contrast sensitivity, ERGs, and accommodative stability.

Sponsors & Collaborators

  • National Institutes of Health (NIH)

    collaborator NIH

  • Southern California College of Optometry at Marshall B. Ketchum University

    lead OTHER

Principal Investigators

  • Chris Chase, PhD · Claremont McKenna College

  • William H. Ridder,III, OD, PhD · Southern California College of Optometry at Marshall B. Ketchum University

  • Eric Borsting, OD, MS · Southern California College of Optometry at Marshall B. Ketchum University

Eligibility

Min Age
17 Years
Max Age
30 Years
Sex
ALL
Healthy Volunteers
Yes

Timeline & Regulatory

Start
2004-07-31
Completion
2008-12-31

Countries

  • United States

Study Locations

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Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT00402155 on ClinicalTrials.gov