Evaluation of Ahmed glaucoma valve implantation through a needle-generated scleral tunnel in Mexican children with glaucoma

Albis-Donado, O, Gil-Carrasco, F, Romero-Quijada, R and Thomas, R (2010) Evaluation of Ahmed glaucoma valve implantation through a needle-generated scleral tunnel in Mexican children with glaucoma. Indian Journal of Ophthalmology, 58 5: 365-373. doi:10.4103/0301-4738.67039


Author Albis-Donado, O
Gil-Carrasco, F
Romero-Quijada, R
Thomas, R
Title Evaluation of Ahmed glaucoma valve implantation through a needle-generated scleral tunnel in Mexican children with glaucoma
Journal name Indian Journal of Ophthalmology   Check publisher's open access policy
ISSN 0301-4738
1998-3689
Publication date 2010-09-01
Sub-type Article (original research)
DOI 10.4103/0301-4738.67039
Open Access Status DOI
Volume 58
Issue 5
Start page 365
End page 373
Total pages 9
Place of publication Mumbai, Maharashtra, India
Publisher Medknow Publications and Media
Language eng
Formatted abstract
Purpose: To evaluate the results and extrusion rates of the Ahmed glaucoma valve (AGV) implantation through a needle-generated scleral tunnel, without a tube-covering patch, in children.
Materials and Methods: A retrospective review of the charts of 106 Mexican children implanted with 128 AGVs operated between 1994 and 2002, with the needle track technique, at our institution, with at least six months follow up was done. Main outcome measures were intraocular pressure (IOP) control, tube extrusions or exposure and other complications.
Results: Kaplan-Meier analysis demonstrated a 96.9% survival rate at six months, 82.4% at one year, 78.7% at two years, 70% at three years and 41.6% at four years. Total success at the last follow-up (IOP between 6 and 21 mm Hg without medications) was achieved in 30 eyes (23.5%), 58 eyes (45.3%) had qualified success (only topical hypotensive drugs) and 40 eyes (31.3%) were failures. The mean pre-and post-operative IOP at the last follow up was 28.4 mmHg (SD 9.3) and 14.5 mmHg (SD 6.3), respectively. No tube extrusions or exposures were observed. Tube-related complications included five retractions, a lens touch and a transitory endothelial touch. The risk of failure increased if the eye had any complication or previous glaucoma surgeries.
Conclusion: Medium-term IOP control in Mexican children with glaucoma can be achieved with AGV implantation using a needle-generated tunnel, without constructing a scleral flap or using a patch to cover the tube. There were no tube extrusions, nor any tube exposures with this technique.
Keyword Ahmed glaucoma valve
Children
Glaucoma
Glaucoma drainage implants
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: Official 2011 Collection
School of Medicine Publications
 
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Created: Sun, 26 Sep 2010, 10:05:59 EST