Comparison Methods for Measuring Interpupillary Distance


About this study

This research study is about measuring the distance between the sighting directions of the two eyes.  This distance is critical for the proper fitting of lenses in glasses.  The most commonly used method currently uses an instrument that measures the distance between two reflections off the corneas that are usually not at the pupil centers.  We propose that the sighting direction of the eyes is more likely to pass through the centers of the pupils than along a direction through the corneal reflections.

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.

Inclusion Criteria:

  • Older than 21 and having binocular vision.


Participating Mayo Clinic locations

Study statuses change often. Please contact us for help.

Mayo Clinic Location Status

Rochester, Minn.

Mayo Clinic principal investigator

William Brown, O.D., Ph.D.

Closed for enrollment

More information


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Study Results Summary

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Supplemental Study Information

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