Morphology of Optic Disc Through Heidelberg Retina Tomograph in Retinal Vein Occlusions Alone or in Combination with Primary Open Angle Glaucoma§

Table 4: HRT II Parameters (Mean Values±SD) Per Occlusion Site in the RVO Group

	OC - RVO	AV-RVO	P OC vs AV	NONHS-RVO	P OC vs NONHS
Disk area (mm²±sd)	2.029±0.914	1.937±0.865	0.15	1.886±0.943	0.17
Cup area (mm²±sd)	0.366±0.094	0.228±0.083	0.01	0.209±0.077	0.016
Cup disk area ratio	0.184±0.063	0.117±0.042	0.005	0.111±0.012	0.007
Rim area (mm²±sd)	1.664±0.94	1.709±0.651	0.12	1.667±0.594	0.15
Height variation contour (mm±sd)	0.346±0.081	0.443±0.072	0.07	0.502±0.045	0.01
Cup volume (mm³±sd)	0.055±0.016	0.043±0.018	0.29	0.033±0.012	0.45
Rim volume (mm³±sd)	0.374±0.021	0.503±0.043	0.005	0.547±0.052	0.003
Mean cup depth (mm±sd)	0.144±0.012	0.136±0.017	0.752	0.132±0.018	0.565
Maximum cup depth (mm±sd)	0.456±0.103	0.521±0.145	0.07	0.517±0.136	0.09
Cup shape measure	-0.221±0.066	-0.302±0.08	0.006	-0.361±0.091	0.004
Mean RNFL thickness (mm±sd)	0.207±0.069	0.245±0.076	0.065	0.291±0.075	0.01
RNFL cross sectional area (mm²±sd)	1.043±0.091	1.256±0.188	0.11	1.419±0.245	0.02

RVO: Retinal Vein Occlusion; POAG: Primary Open Angle Glaucoma; RNFL: Retinal Nerve Fiber Layer; AV-RVO: Artero-Venous crossing Retinal Vein Occlusion; OC-RVO: Optic Cup Retinal Vein Occlusion; ON-RVO: Optic Nerve Retinal Vein Occlusion without Head Nerve Swelling (NONHS-RVO).