Impaired Corneal Biomechanical Properties and the Prevalence of Keratoconus in Mitral Valve Prolapse

Table 2

Corneal biomechanical properties of the patients and the control groups.

Variables	MVP group (𝑛: 52)	KC group (𝑛: 39)	Control group (𝑛: 45)	𝑃 value^a	𝑃 value^b	𝑃 value^c
CH, mmHg	9.46±1.57	7.48±1.35	10.33±1.47	0.006	0.001	0.001
CRF, mmHg	9.51±1.55	6.48±1.78	10.42±1.79	0.009	0.001	0.001
IOPg, mmHg	14.49±3.59	10.38±2.78	15.75±3.59	0.067	0.001	0.001
IOPcc, mmHg	15.44±3.08	14.25±2.35	15.97±2.88	0.38	0.048	0.001

aStudent’s 𝑡-test, MVP-control group, ^bStudent’s 𝑡-test, MVP-KC group, ^cStudent’s 𝑡-test, KC-control group, MVP: mitral valve prolapse, KC: keratoconus, CH: corneal hysteresis, CRF: corneal resistance factor, IOPg: Goldmann-related intraocular pressure, IOPcc: cornea compensated intraocular pressure.