Morphometric Optic Nerve Head Analysis in Glaucoma Patients: A Comparison between the Simultaneous Nonmydriatic Stereoscopic Fundus Camera (Kowa Nonmyd WX3D) and the Heidelberg Scanning Laser Ophthalmoscope (HRT III)

Table 1

Comparison and distribution of stereometric optic nerve head parameters assessed with HRT III and Kowa nonmyd WX3D for all investigated patients subdivided in two groups according to their CDR (cut-off value 0.5) and in total. Values are expressed as mean (± standard deviation, SD).

Optic nerve head parameter	HRT III ()	Kowa nonmyd WX3D ()
CDR < 0.5 group
CDR	0.36 (±0.10)	0.50 (±0.12)
Disc area (mm^2)	2.18 (±0.32)	2.83 (±0.57)
Cup volume (mm^3)	0.18 (±0.10)	0.12 (±0.08)
Rim volume (mm^3)	0.38 (±0.16)	0.50 (±0.35)
Maximum cup depth (mm)	0.70 (±0.19)	0.38 (±0.15)
CDR ≥ 0.5 group
CDR	0.63 (±0.09)	0.48 (±0.12)
Disc area (mm^2)	2.03 (±0.45)	2.79 (±0.59)
Cup volume (mm^3)	0.30 (±0.16)	0.11 (±0.08)
Rim volume (mm^3)	0.18 (±0.06)	0.51 (±0.32)
Maximum cup depth (mm)	0.72 (±0.25)	0.38 (±0.17)
Total
CDR	0.46 (±0.17)	0.49 (±0.12)
Disc area (mm^2)	2.12 (±0.38)	2.82 (±0.57)
Cup volume (mm^3)	0.22 (±0.14)	0.11 (±0.08)
Rim volume (mm^3)	0.30 (±0.16)	0.50 (±0.33)
Maximum cup depth (mm)	0.70 (±0.21)	0.38 (±0.15)