title: Clinical outcomes of trabeculectomy vs. Ahmed glaucoma valve implantation in patients with penetrating keratoplasty : (Trabeculectomy vs. Ahmed galucoma valve in patients with penetrating keratoplasty).
abstract: The aim of this study was to compare the visual outcomes, intraocular pressure (IOP), and endothelial cell loss caused by trabeculectomy (TRAB) and Ahmed glaucoma valve (AGV) implantation in patients who had previously undergone penetrating keratoplasty (PKP). The data from all patients who underwent surgical treatment of glaucoma after PKP were reviewed at the Cornea Department of Haydarpasa Numune Education and Research Hospital. Eighteen patients who had undergone surgical treatment of glaucoma after PKP were included in this retrospective study. Time between PKP and glaucoma surgeries, visual acuity results, IOP results, endothelial cell counts (ECC) before the surgery, at 1st, 6th, and 12th month of surgery were recorded. Differences between two groups were evaluated. Mean loss of ECC was 315 cells/mm(2) in the AGV group and 197 cells/mm(2) in TRAB group at 12th month of glaucoma surgery. The difference between endothelial cell loss at 12th month of surgery was statistically significant and higher in AGV group (p < 0.001). The decrease in IOP was 64.2 % in AGV group and 46.9 % in TRAB group at 12th month of surgery. Both differences were statistically significant between 2 groups (p = 0.001, 0.001). TRAB successfully decreased both the IOP and endothelial cell loss in patients with post-PKP glaucoma. Ahmed glaucoma valve had a significantly better IOP lowering but higher endothelial cell loss effect.
authors.affiliation: Department of Ophthalmology, School of Medicine, Bulent Ecevit University, Zonguldak, Turkey. doktorcun@yahoo.com.
authors.forename: Mehmet Orcun
authors.initials: MO
authors.lastname: Akdemir
authors.affiliation: Haydarpasa Numune Research and Education Hospital, Istanbul, Turkey.
authors.forename: Banu Torun
authors.initials: BT
authors.lastname: Acar
authors.affiliation: Department of Biostatistics, School of Medicine, Bulent Ecevit University, Zonguldak, Turkey.
authors.forename: Furuzan
authors.initials: F
authors.lastname: Kokturk
authors.affiliation: Haydarpasa Numune Research and Education Hospital, Istanbul, Turkey.
authors.forename: Suphi
authors.initials: S
authors.lastname: Acar
mesh_terms: D002452:Cell Count; D055954:Corneal Endothelial Cell Loss / Q000175:diagnosis; D004728:Endothelium, Corneal / Q000473:pathology; D005260:Female; D005901:Glaucoma / Q000175:diagnosis / Q000209:etiology / Q000601:surgery*; D020327:Glaucoma Drainage Implants; D006068:Gonioscopy; D006801:Humans; D007429:Intraocular Pressure / Q000502:physiology; D015948:Keratoplasty, Penetrating; D008297:Male; D008875:Middle Aged; D011183:Postoperative Complications; D019919:Prosthesis Implantation; D012189:Retrospective Studies; D014065:Tonometry, Ocular; D014130:Trabeculectomy; D014792:Visual Acuity / Q000502:physiology
keywords: Ahmed glaucoma valve; Endothelial cell loss; Glaucoma; Penetrating keratoplasty; Trabeculectomy