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Status:

UNKNOWN

The Results of Ahmed Valve Operations

Lead Sponsor:

University Health Network, Toronto

Conditions:

Glaucoma

Eligibility:

All Genders

20-85 years

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 conjunc...

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 conjunc...

Eligibility Criteria

Inclusion

  • Inclusion criteria:
  • Patients at the ages of 20-85 on the date of the surgery
  • 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.
  • Visual acuity of, at least, 20/800 before the operation.
  • Regular post operative follow ups, for at least 1 year.
  • Patients after corneal transplantation for whom the indication of valve implantation was uncontrolled glaucoma.
  • Exclusion Criteria:
  • A previous seton surgery in the operated eye
  • Uveitic glaucoma patients or history of uveitis in the operated or in the fellow eye.
  • Any inflammatory or ocular surface disease that could affect the healing of the conjunctiva after the surgery ( e.g: OCP)
  • Strabismus or complains of diplopia prior to the seton surgery.
  • Past history of retinal detachment surgery with scleral buckle in the operated eye
  • Past history of endophthalmitis in the operated eye.

Exclusion

    Key Trial Info

    Start Date :

    January 1 1997

    Trial Type :

    OBSERVATIONAL

    End Date :

    June 1 2005

    Estimated Enrollment :

    80 Patients enrolled

    Trial Details

    Trial ID

    NCT00193960

    Start Date

    January 1 1997

    End Date

    June 1 2005

    Last Update

    December 1 2005

    Active Locations (1)

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    Page 1 of 1 (1 locations)

    1

    Department of Ophthalmology and visual sciences, Toronto Western Hospital,

    Toronto, Ontario, Canada