Table 3.

Optic nerve head evaluation through stereophotography

Variable	CHF group	Control group	P
N	28	30	–
Vertical cup/disc ratio, Mean (SD)	0.49 (0.19)	0.42 (0.15)	0.06*
Horizontal cup/disc ratio, Mean (SD)	0.47 (0.17)	0.42 (0.15)	0.19*
Rim pale (focal or difuse) (%)	7.2	3.4	0.61†
Notch of the neural rim (%)	10.7	0.00	0.11†
Disc pit (%)	0.00	0.00	–
Disc hemorrhage (%)	0.00	0.00	–
RNFL defect (%)	7.2	0.00	0.24†

Note:

^*P values calculated with generalized estimating equations;

^†P values calculated with Fisher’s exact test.

Abbreviations: CHF, chronic heart failure; SD, standard deviation; RNFL, retinal layer fiber layer.