Glaucoma
Conditions
Keywords
Seton surgery, glaucoma, Ahmed valve, intraocular pressure
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.
Interventions
PROCEDURE1) Intraocular pressure 2) visual acuity
Sponsors
University Health Network, Toronto
Study design
Observational model
DEFINED_POPULATION
Time perspective
RETROSPECTIVE
Eligibility
Sex/Gender
ALL
Age
20 Years to 85 Years
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.
Countries
Canada
Contacts
Primary ContactRony Rachmiel, M.D.
Outcome results
None listed