Different companies do work this out differently, but we work out the corner as if you are stood facing the sofa.  

When you're shopping on our website you'll see that our team have included whether the sofa is left or right hand facing in the name.  We've also added a label in the top left hand corner above the images. 

Left Corner

As you can see when you're stood facing the sofa the chaise is on the LEFT hand side.  So when you're sat on the sofa itself the chaise is on the RIGHT.

Right Corner

As you can see when you're stood facing the sofa the chaise is on the RIGHT hand side.  So when you're sat on the sofa itself the chaise is on the LEFT.