Characterizing Opthalmic Viscosurgical Devices Using the Kinexus Rotational Rheometer from Malvern Instruments
24 April 2015

Ophthalmic Viscosurgical Devices (OVDs) are viscoelastic solutions or gels used to protect the corneal endothelium from mechanical trauma and to maintain intraocular space during eye surgery. There is now an International Standard (ISO15798:2013) detailing the requirements for characterizing these materials in terms of their biological, chemical and physical characteristics. This application note shows the evaluation of the rheological properties of an HA based OVD at three different HA concentrations according to ISO15798:2013 using a Kinexus rotational rheometer.