This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Cornea and sclera, Subject name: Ophthalmology
Corneal hysteresis is studied using 
Select and explain. 
A. Goldmann perimetry, B. Corneal topography, C. Dynamic Contour Tonometry, D. Goldmann Applanation tonometry
C: Dynamic Contour Tonometry
Answer: C: Dynamic Contour Tonometry 
Explanation: Corneal hysteresis assesses the biomechanical strength of the cornea and is assessed by Dynamic Contour Tonometry(DCT). Dynamic contour tonometry (DCT) is a contin- uous (dynamic) and direct tonometric principle. It reads the IOP at the interface between the sensitive tonometer tip and the surface of the cornea. Ref khurana 6th edition pg 345