Cornea Hysteresis and IOP Readings and Treatment

Dr. Robert Stamper discusses cornea hysteresis, a measure of the elasticity of the cornea, and its use in assessment of IOP and glaucoma progression. Using tonometric processes is dependent on the ability to bend the cornea, and any disruption in that ability can skew the accuracy of these processes and the resultant readings. Increased elasticity makes it easier for the tonometer to flatten the cornea, leading to potential underestimation of IOP, but a stiffer cornea could lead to overestimation of IOP. A low hysteresis measurement (below 10) is a risk factor for glaucoma progression as well as conversion of ocular hypertension to glaucoma.

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