Risk of Ptosis following Glaucoma Tube Shunt Placement


  • 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: 14-006894
    Sponsor Protocol Number: 14-006894

About this study

The prupose of this study is to determine the incidence and amount of ptosis after tube shunt placement compared to other types of anterior segment surgery.

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:

  • Adult patients undergoing anterior segment surgery including single Ahmed or Baerveldt tube shunt placement, trabeculectomy, or cataract surgery Mayo Clinic Rochester. 

Exclusion Criteria:            

  • Patients <18 years old
  • Previous scleral buckle
  • Boston keratoprosthesis
  • Thyroid eye disease
  • Previous eyelid surgery
  • History of subtenon’s steroid injection

Participating Mayo Clinic locations

Study statuses change often. Please contact us for help.

Mayo Clinic Location Status Contact

Rochester, Minn.

Mayo Clinic principal investigator

Cheryl Khanna, M.D.

Open for enrollment

Contact information:

Cheryl Khanna M.D.



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