Case #60 – Does my Myopic Patient Have Glaucoma? – Page 15 of 22

Corneal Hysteresis

Corneal hysteresis (CH) is a measurement of the cornea’s ability to dampen the effects of pressure. Studies have linked the viscoelastic properties of the cornea to the lamina cribrosa.¹⁶ Due to this link, CH can possibly provide insight of the effect IOP has on the lamina cribrosa. Some of these studies have shown that a lower CH has been shown to be a risk factor for RNFL and VF progression.¹⁷

The corneal hysteresis of the patient in the case was measured as 8 OD and OS.

Table showing the normative values for corneal hysteresis. To assess risk in glaucoma
the lower the CH, the greater the risk for glaucoma or glaucomatous progression.¹⁸