Objective:　This　study　aims　to　obtain　the　biomechanical　properties　of　porcine　cornea　so　as　to　provide　necessary　biomechanical　experimental　basis　for　pig-to-human　corneal　xenotransplantation.　Methods:　Seventeen　fresh　porcine　corneal　specimens　obtained　from　pigs　aged　4-6　months　were　examined　under　inflation　conditions　to　determine　the　constitutive　relationships　of　the　material　through　dynamic　loading　conditions　(pressure　range:　1.47-42.66　mmHg).　The　forward　deflection　of　porcine　anterior　corneal　apex　was　measured　by　the　laser　displacement　sensor.　The　pressure　deformation　results　were　analysed　on　the　basis　of　shell　theory　to　estimate　Young＇s　modulus　of　the　cornea　and　derive　its　relationship　with　intraocular　pressure　(IOP).　Results:　The　porcine　corneas　showed　a　nonlinear　corneal　forward　displacement/IOP　and　stress/strain　relationship　with　an　initial　low　stiffness　stage　and　a　later　high　stiffness　stage.　In　spite　of　the　nonlinearity　between　the　internal　pressure　and　apex　forward　deflection,　the　relationship　between　the　Young＇s　modulus　and　the　IOP　was　almost　linear.　Conclusions:　Compared　with　human　corneas,　porcine　corneas　exhibited　a　similar　nonlinear　behaviour　but　lower　stiffness　values.　The　biomechanical　parameters　of　porcine　cornea　obtained　from　this　test　could　be　applied　to　numerical　simulations　of　refractive　surgery　procedures　and　lay　a　foundation　for　pig-to-human　corneal　xenotransplantation.　©　2012　Informa　UK,　Ltd.