UNIGE document Scientific Article
previous document  unige:19606  next document
add to browser collection
Title

Outflow facility in isolated porcine eyes after creation of an intrascleral canal by injection of stabilized hyaluronic acid

Authors
Published in Investigative Ophthalmology & Visual Science. 2009, vol. 50, no. 8, p. 3759-3762
Abstract PURPOSE: To investigate outflow facility in isolated porcine eyes after creation of an intrascleral canal by injection of stabilized, nonanimal, hyaluronic acid gel (NASHA; Q-Med AB, Uppsala, Sweden). METHODS: Outflow facility of 60 porcine eyes was measured after creation of an intrascleral canal into the anterior chamber by injection of NASHA gel using six different combinations of needle size (21, 23, and 27 gauge) and canal length (4.6 mm). Ten eyes were tested in each of the six subgroups and an additional 10 were control eyes. After cannulation of the anterior chamber and adjustment of the inflow rate to achieve a stable pressure of 10 mm Hg, an intrascleral channel was created by injection of NASHA gel. The inflow rate was then increased to achieve a stable pressure of 20 mm Hg and then again adjusted to maintain a stable pressure of 30 mm Hg. RESULTS: A significant increase in outflow facility was found between the control group and the NASHA gel-injected group (60 eyes) for both the 10- to 20-mm Hg and the 20- to 30-mm Hg pressure change (P < 0.001). Increase in outflow facility was independent of the canal lengths and the needle sizes used for both the 10- to 20-mm Hg (P = 0.82) and 20- to 30-mm Hg (P = 0.99) pressure change. CONCLUSIONS: A single ab externo intrascleral canal created by injection of NASHA gel increases the outflow facility in isolated porcine eyes. This is a potentially promising new technique for lowering intraocular pressure. It remains to be seen whether these positive results can be reproduced for significant periods in humans.
Keywords AnimalsAnterior Chamber/*drug effectsAqueous Humor/*secretionCatheterization/methodsGelsHyaluronic Acid/*administration & dosageInjectionsIntraocular PressureSclera/metabolismSwineTrabecular Meshwork/drug effects
Identifiers
PMID: 19218602
Full text
Article - document accessible for UNIGE members only Limited access to UNIGE
Other version: http://www.iovs.org/content/50/8/3759.full.pdf
Structures
Citation
(ISO format)
MAVRAKANAS, Nikolaos, SHAARAWY, Tarek. Outflow facility in isolated porcine eyes after creation of an intrascleral canal by injection of stabilized hyaluronic acid. In: Investigative Ophthalmology & Visual Science, 2009, vol. 50, n° 8, p. 3759-3762. https://archive-ouverte.unige.ch/unige:19606

112 hits

0 download

Update

Deposited on : 2012-04-23

Export document
Format :
Citation style :