Ahmed valve implant and penetrating keratoplasty.
- Author:
Hye Won CHUNG
1
;
Michael Scott KOOK
;
Hung Won TCHAH
Author Information
1. Department of ophthalmology, University of Ulsan, College of Medicine, Asan medical center, Seoul, Korea. hwtchah@amc.seoul.kr
- Publication Type:Original Article
- Keywords:
Ahmed valve implant;
Graft failure;
Intraocular pressure;
Penetrating keratoplasty
- MeSH:
Chungcheongnam-do;
Follow-Up Studies;
Glaucoma;
Graft Rejection;
Graft Survival;
Humans;
Intraocular Pressure;
Keratoplasty, Penetrating*;
Medical Records;
Retrospective Studies;
Transplants;
Visual Acuity
- From:Journal of the Korean Ophthalmological Society
2003;44(1):73-80
- CountryRepublic of Korea
- Language:Korean
-
Abstract:
PURPOSE: To present long-term results of intraocular pressure control and graft survival of eyes with penetrating keratoplasty(PKP) and Ahmed valve implant METHODS: We retrospectively reviewed medical records of 18 patients who underwent both PKP and Ahmed valve implant at Asan medical center between July of 1993 and June of 2000. Ahmed valve implant surgery was performed either before PKP (3 eyes), after PKP (12 eyes), or at the same time as PKP (3 eyes). Mean patient age was 40.7 years (range, 18 to 77 years) and mean follow up was 32 months (range, 5 to 120 months). Glaucoma outcome was assessed by postoperative intraocular pressure. Corneal outcome was assessed by graft rejection, failure and visual acuity. RESULTS: The average preoperative intraocular pressure for all of the eyes was 35 mmHg. Eighty nine percent of them (16 eyes) achieved a final intraocular pressure of less than 20 mmHg (average, 15 mmHg on a mean of 0.9 medications). Graft failure occurred in 13/16 (72%). The overall PKP success rate, including the eyes that underwent repeat PKP, was 44 %. Visual acuity improved in 8 eyes, remained stable in 5 eyes and decreased in 5 eyes. CONCLUSIONS: Ahmed valve implant can successfully control glaucoma in a majority (89%) of PKP eyes. However, the success of corneal grafts is relatively low (44%).
