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

Table 3: HRT II Parameters (Mean Values±SD): Comparison Between Fellow Eye RVO and Healthy Control Group

	Fellow Eye RVO	Controls	P
Disk area (mm²±sd)	1.997±0.865	2.121±0.973	0.112
Cup area (mm²±sd)	0.481±0.194	0.411±0.183	0.08
Cup disk area ratio	0.216±0.102	0.188±0.091	0.291
Rim area (mm²±sd)	1.517±0.342	1.708±0.41	0.003
Height variation contour (mm±sd)	0.351±0.081	0.252±0.065	0.001
Cup volume (mm³±sd)	0.109±0.044	0.056±0.012	0.171
Rim volume (mm³±sd)	0.375±0.095	0.458±0.113	0.235
Mean cup depth (mm±sd)	0.175±0.063	0.112±0.025	0.107
Maximum cup depth (mm±sd)	0.502±0.142	0.479±0.132	0.08
Cup shape measure	-0.226±0.043	-0.329±0.051	0.0025
Mean RNFL thickness (mm±sd)	0.215±0.141	0.171±0.114	0.29
RNFL cross sectional area (mm²±sd)	1.073±0.965	0.882±0.253	0.31

RVO: Retinal Vein Occlusion; POAG: Primary Open Angle Glaucoma; RNFL: Retinal Nerve Fiber Layer.Three parameters (Rim Area, Height Variation Contour and Cup Shape Measure) reached a statistically significant difference (p<0.05).