Branch retinal vein occlusion
In branch retinal vein occlusion, the fundus would show intraretinal haemorrhages in all quadrants with tortuous vessels and the disc is often swollen as you can see here (as the disc margin is blurred).
Central retinal vein occlusion
In central retinal vein occlusion, the fundus would show intraretinal haemorrhages in all quadrants with tortuous vessels and the disc is often swollen as you can see here (as the disc margin is blurred).