The Results of Ahmed Valve Operations
- Conditions
- Glaucoma
- Registration Number
- NCT00193960
- Lead Sponsor
- University Health Network, Toronto
- 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.
- 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.
Recruitment & Eligibility
- Status
- UNKNOWN
- Sex
- All
- Target Recruitment
- 80
Not provided
- 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.
Study & Design
- Study Type
- OBSERVATIONAL
- Study Design
- Not specified
- Primary Outcome Measures
Name Time Method
- Secondary Outcome Measures
Name Time Method
Trial Locations
- Locations (1)
Department of Ophthalmology and visual sciences, Toronto Western Hospital,
🇨🇦Toronto, Ontario, Canada