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Corneal Hysteresis (CH)

 

 

Corneal Hysteresis:
A superior test for the evaluation of glaucoma risk, and is more associated with visual field progression than CCT or IOP.


Corneal Hysteresis (CH) is an assessment of the cornea’s ability to absorb and dissipate energy. This is very different from thickness or topography, which are geometrical attributes of the cornea. Corneal Hysteresis is independently predictive of visual field progression in glaucoma.


A new CPT® code92145, has been published specifically for the Corneal Hysteresis measurement provided by the Reichert® Ocular Response Analyzer®, effective January 1, 2015. Read the press release: "Reichert Announces New CPT Code for Corneal Hysteresis." CPT is registered trademark of the American Medical Association.

Ocular Response Analyzer® (ORA) from Reichert Technologies® is the only tonometer in the world capable of measuring the biomechanical tissue property known as Corneal Hysteresis.

 


 

Glaucoma Risk Assessment to the Next Level: 
The Role in Corneal Hysteresis

A group of glaucoma specialists (including Robert M. Weinreb, MD; Jamie D. Brandt, MD; Nathan M. Radcliffe, MD; Felipe A. Medeiros, MD) discuss data supporting the role of Corneal Hysteresis (CH)–a measure of the eye’s viscoelastic biomechanical properties–in glaucoma risk assessment. The experts give a historical perspective on CH, explain how it works as a potential biomarker, indicate which patients are good candidates and provide guidance on incorporating CH into clinical practice, highlighting important billing considerations. Importantly, they demonstrate how recent clinical research findings show compelling evidence that CH is a powerful asset for assessing patients at high risk for developing glaucoma and disease progression. Copyright 2015 Jobson Medical Information LLC. 
PDF 1.1 mb

 

 


 

 

Felipe Medeiros, MD, Professor of Ophthalmology at the University of California, describes his recent study using Corneal Hysteresis (CH) — a measure of the eye’s viscoelastic biomechanics properties — for predicting glaucoma progression. Dr. Medeiros explains the importance of collecting Corneal Hysteresis measurements to better determine patients at high risk for glaucoma.

 

Nathan Radcliffe, MD and Christopher Starr, MD, both of Weill Cornell Medical College, New York-
Presbyterian Hospital, discuss  the clinical applications in glaucoma of Corneal Hysteresis (CH).

 

In an interview with Whitney Hauser, OD, Justin Schweitzer, OD, explains why measuring
Corneal Hysteresis and corneal biomechanics may be relevant for monitoring for disease
progression in patients with glaucoma.

  


 

 

Ocular Response Analyzer® (ORA) from Reichert Technologies® is the only tonometer in the world capable of measuring the biomechanical tissue property known as Corneal Hysteresis.

In addition, Corneal Hysteresis enables the Ocular Response Analyzer to provide Corneal-Compensated IOP (IOPcc) a better indication of true pressure. 

Learn more about Ocular Response Analyzer...

 




 

 

Here is what your peers are saying about Corneal Hysteresis: 

“Corneal Hysteresis (CH)
may be a more important
risk factor than CCT.”


Medeiros FA, Meira-Freitas D, Lisboa R, Kuang TM, Zangwill LM, Weinreb RN. Corneal hysteresis as a risk factor for glaucoma progression: a prospective longitudinal study. Ophthalmology. 2013 Aug;120(8):1533-40. 

 

 

“Corneal Hysteresis (CH) was the corneal parameter most strongly associated with VF progression.” 

De Moraes CV, Hill V, Tello C, Liebmann JM, Ritch R. Lower corneal hysteresis is associated with more rapid glaucomatous visual field progression. J Glaucoma. 2012 Apr-May;21(4):209-13. 

 

 

 

“Corneal Hysteresis (CH) explained 17.4%of the variation in the rates of progression, CCT explained only 5.2%.”

Medeiros FA, Meira-Freitas D, Lisboa R, Kuang TM, Zangwill LM, Weinreb RN. Corneal hysteresis as a risk factor for glaucoma progression: a prospective longitudinal study. Ophthalmology. 2013 Aug;120(8):1533-40. 

 

“...Corneal Hysteresis (CH) was more closely related to visual field MD than to structural markers of glaucoma damage as measured by SD-OCT.”

Vu DM, Silva FQ, Haseltine SJ, Ehrlich JR, Radcliffe NM. Relationship between corneal hysteresis and optic nerve parameters measured with spectral domain optical coherence tomography. Graefes Arch Clin Exp Ophthalmol. 2013 Jul;251(7):1777-83. 

 

 


Ocular Response Analyzer is engineered, designed, and manufactured in Buffalo, NY, USA.

 

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