title: A false-positive Seidel test after Ahmed valve insertion.
abstract: An 80-year-old monocular man with long-standing primary open angle glaucoma underwent successful filtering surgery in his sighted right eye in 1980. He subsequently developed a cataract and had an uncomplicated clear cornea phacoemulsification with posterior chamber intraocular lens in 1996. Post-operatively, the filtration bleb remained very avascular but shallowed; the intraocular pressure increased and remained uncontrolled despite maximally tolerated medical therapy. His vision improved to 6/7.5 and automated perimetry revealed a less than 5 degrees small central island of vision. His left eye was phthisical with no light perception.
authors.affiliation: Scheie Eye Institute, Department of Ophthalmology, University of Pennsylvania School of Medicine, Philadelphia 19104, USA.
authors.forename: M R
authors.initials: MR
authors.lastname: Piccone
authors.forename: J R
authors.initials: JR
authors.lastname: Piltz
authors.forename: J
authors.initials: J
authors.lastname: Yoken
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D001082:Aqueous Humor / Q000378:metabolism; D003941:Diagnostic Techniques, Ophthalmological; D005189:False Positive Reactions; D005500:Follow-Up Studies; D020327:Glaucoma Drainage Implants / Q000009:adverse effects*; D005902:Glaucoma, Open-Angle / Q000601:surgery; D006801:Humans; D007765:Lacrimal Apparatus / Q000378:metabolism*; D008297:Male; D011183:Postoperative Complications / Q000175:diagnosis* / Q000378:metabolism; D019919:Prosthesis Implantation; D014792:Visual Acuity; D014794:Visual Fields