Clincosm LogoSign in Get a demo

The Results of Ahmed Valve Operations

Sponsor
University Health Network, Toronto (Other)
Overall Status
Unknown status
CT.gov ID
NCT00193960
Collaborator
(none)
80
Enrollment
1
Location
101
Duration (Months)
0.8
Patients Per Site Per Month

Study Details

Study Description

Brief Summary

Glaucoma drainage devices are usually placed in the superior quadrants. The superotemporal quadrant is usually the site of choice. However, when the upper fornix is scarred and especially when conjunctiva is two fibrotic to enable adequate coverage of tube with a scleral or other patch graft, some surgeons place the tube in one of inferior quadrants.

Condition or Disease Intervention/Treatment Phase
  • Procedure: 1) Intraocular pressure 2) visual acuity

Detailed Description

Glaucoma drainage devices are usually placed in the superior quadrants. The superotemporal quadrant is usually the site of choice. However, when the upper fornix is scarred and especially when conjunctiva is two fibrotic to enable adequate coverage of tube with a scleral or other patch graft, some surgeons place the tube in one of inferior quadrants.

In the present study we will compare the outcome and complicatons of both the superior and the inferior approach for inserting Ahmed Valve implants.

Study Design

Study Type:
Observational
Observational Model:
Defined Population
Time Perspective:
Retrospective
Official Title:
A Comparison Between Superior and Inferior Ahmed Glaucoma Valve Implantation: Surgical Success and Complications
Study Start Date :
Jan 1, 1997
Study Completion Date :
Jun 1, 2005

Outcome Measures

Primary Outcome Measures

    Eligibility Criteria

    Criteria

    Ages Eligible for Study:
    20 Years to 85 Years
    Sexes Eligible for Study:
    All
    Accepts Healthy Volunteers:
    No
    Inclusion criteria:

    1. Patients at the ages of 20-85 on the date of the surgery

    2. The indication for the surgery was: uncontrolled glaucoma with maximally tolerated medical therapy who did not or were not expected to respond to other surgical procedures than seton surgery.

    3. Visual acuity of, at least, 20/800 before the operation.

    4. Regular post operative follow ups, for at least 1 year.

    5. Patients after corneal transplantation for whom the indication of valve implantation was uncontrolled glaucoma.

    Exclusion Criteria:

    1. A previous seton surgery in the operated eye

    2. Uveitic glaucoma patients or history of uveitis in the operated or in the fellow eye.

    3. Any inflammatory or ocular surface disease that could affect the healing of the conjunctiva after the surgery ( e.g: OCP)

    4. Strabismus or complains of diplopia prior to the seton surgery.

    5. Past history of retinal detachment surgery with scleral buckle in the operated eye

    6. Past history of endophthalmitis in the operated eye.

    Contacts and Locations

    Locations

    Site City State Country Postal Code
    1 Department of Ophthalmology and visual sciences, Toronto Western Hospital, Toronto Ontario Canada

    Sponsors and Collaborators

    • University Health Network, Toronto

    Investigators

    • Study Director: Trope E Graham, MB, FRCSC, University of Toronto, Department of Ophthalmology
    • Study Director: Rony Rachmiel, M.D, University of Toronto, Department of Ophthalmology

    Study Documents (Full-Text)

    None provided.

    More Information

    Publications

    None provided.
    Responsible Party:
    , ,
    ClinicalTrials.gov Identifier:
    NCT00193960
    Other Study ID Numbers:
    • In process
    First Posted:
    Sep 19, 2005
    Last Update Posted:
    Dec 1, 2005
    Last Verified:
    Sep 1, 2005
    Keywords provided by , ,
    Seton surgery, glaucoma, Ahmed valve, intraocular pressure
    Additional relevant MeSH terms:
    Glaucoma

    Study Results

    No Results Posted as of Dec 1, 2005