A Study to Assess Existing and New Measures of Control in Patients with Intermittent Exotropia


  • Study type

  • Study IDs

  • Describes the nature of a clinical study. Types include:

    • Observational study — observes people and measures outcomes without affecting results.
    • Interventional study (clinical trial) — studies new tests, treatments, drugs, surgical procedures or devices.
    • Medical records research — uses historical information collected from medical records of large groups of people to study how diseases progress and which treatments and surgeries work best.
  • Site IRB
    • Rochester, Minnesota: 212-04
    Sponsor Protocol Number: 212-04

About this study

This study is being done to:

• Learn how to measure control in children who have an intermittent outward turning of one or both eyes (intermittent exotropia)

• To find out if ability to control changes throughout the day or from one day to the next

• To find out if this control is the same measurement, regardless of who is examining the child

Participation eligibility

Participant eligibility includes age, gender, type and stage of disease, and previous treatments or health concerns. Guidelines differ from study to study, and identify who can or cannot participate. If you need assistance understanding the eligibility criteria, please contact the study team.

See eligibility criteria

Inclusion Criteria:

  • Age 6 months to 18 years at examination
  • Exotropia ≥ 12 prism diopters at either distance or near
  • No other ocular disease likely to reduce visual acuity except amblyopia
  • No paralytic strabismus

Participating Mayo Clinic locations

Study statuses change often. Please contact us for help.

Mayo Clinic Location Status Contact

Rochester, Minn.

Mayo Clinic principal investigator

Brian Mohney, M.D.

Closed for enrollment

Contact information:

JaMario Ayers




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